package.json: pin npm dependencies to exact versions

Change-Id: I92792c13386d6b007b6cb710be3bc82d24146f5d
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/379138
Trust: Jamal Carvalho <jamal@golang.org>
Run-TryBot: Jamal Carvalho <jamal@golang.org>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
TryBot-Result: kokoro <noreply+kokoro@google.com>
diff --git a/package-lock.json b/package-lock.json
index 140a228..2f6a67c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1997,6 +1997,11 @@
       "resolved": "https://registry.npmjs.org/colord/-/colord-2.9.2.tgz",
       "integrity": "sha512-Uqbg+J445nc1TKn4FoDPS6ZZqAvEDnwrH42yo8B40JSOgSLxMZ/gt3h4nmCtPLQeXhjJJkqBx7SCY35WnIixaQ=="
     },
+    "colorette": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.4.0.tgz",
+      "integrity": "sha512-Y2oEozpomLn7Q3HFP7dpww7AtMJplbM9lGZP6RDfHqmbeRjiwRg4n6VM6j4KLmRke85uWEI7JqF17f3pqdRA0g=="
+    },
     "combined-stream": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
@@ -5361,13 +5366,13 @@
       "integrity": "sha512-NCrCHhWmnQklfH4MtJMRjZ2a8c80qXeMlQMv2uVp9ISJMTt562SbGd6n2oq0PaPgKm7Z6pL9E2UlLIhC+SHL3w=="
     },
     "postcss": {
-      "version": "8.4.5",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
-      "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
+      "version": "8.3.2",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.3.2.tgz",
+      "integrity": "sha512-y1FK/AWdZlBF5lusS5j5l4/vF67+vQZt1SXPVJ32y1kRGDQyrs1zk32hG1cInRTu14P0V+orPz+ifwW/7rR4bg==",
       "requires": {
-        "nanoid": "^3.1.30",
-        "picocolors": "^1.0.0",
-        "source-map-js": "^1.0.1"
+        "colorette": "^1.2.2",
+        "nanoid": "^3.1.23",
+        "source-map-js": "^0.6.2"
       }
     },
     "postcss-media-query-parser": {
@@ -5835,9 +5840,9 @@
       "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
     },
     "source-map-js": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.1.tgz",
-      "integrity": "sha512-4+TN2b3tqOCd/kaGRJ/sTYA0tR0mdXx26ipdolxcwtJVqEnqNYvlCAt1q3ypy4QMlYus+Zh34RNtYLoq2oQ4IA=="
+      "version": "0.6.2",
+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-0.6.2.tgz",
+      "integrity": "sha512-/3GptzWzu0+0MBQFrDKzw/DvvMTUORvgY6k6jd/VS6iCR4RDTKWH6v6WPwQoUO8667uQEf9Oe38DxAYWY5F/Ug=="
     },
     "source-map-support": {
       "version": "0.5.19",
@@ -6117,11 +6122,26 @@
           "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.2.0.tgz",
           "integrity": "sha512-CmxgYGiEPCLhfLnpPp1MoRmifwEIOgjcHXxOBjv7mY96c+eWScsOP9c112ZyLdWHi0FxHjI+4uVhKYp/gcdRmQ=="
         },
+        "postcss": {
+          "version": "8.4.5",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
+          "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
+          "requires": {
+            "nanoid": "^3.1.30",
+            "picocolors": "^1.0.0",
+            "source-map-js": "^1.0.1"
+          }
+        },
         "resolve-from": {
           "version": "5.0.0",
           "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-5.0.0.tgz",
           "integrity": "sha512-qYg9KP24dD5qka9J47d0aVky0N+b4fTU89LN9iDnjB5waksiC49rvMB0PrUJQGoTmH50XPiqOvAjDfaijGxYZw=="
         },
+        "source-map-js": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.1.tgz",
+          "integrity": "sha512-4+TN2b3tqOCd/kaGRJ/sTYA0tR0mdXx26ipdolxcwtJVqEnqNYvlCAt1q3ypy4QMlYus+Zh34RNtYLoq2oQ4IA=="
+        },
         "v8-compile-cache": {
           "version": "2.3.0",
           "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.3.0.tgz",
@@ -6161,6 +6181,23 @@
       "requires": {
         "postcss": "^8.3.11",
         "postcss-sorting": "^7.0.1"
+      },
+      "dependencies": {
+        "postcss": {
+          "version": "8.4.5",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
+          "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
+          "requires": {
+            "nanoid": "^3.1.30",
+            "picocolors": "^1.0.0",
+            "source-map-js": "^1.0.1"
+          }
+        },
+        "source-map-js": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.1.tgz",
+          "integrity": "sha512-4+TN2b3tqOCd/kaGRJ/sTYA0tR0mdXx26ipdolxcwtJVqEnqNYvlCAt1q3ypy4QMlYus+Zh34RNtYLoq2oQ4IA=="
+        }
       }
     },
     "stylelint-prettier": {
diff --git a/package.json b/package.json
index 02b32ae..62679fe 100644
--- a/package.json
+++ b/package.json
@@ -18,30 +18,30 @@
   "dependencies": {
     "@types/jest": "26.0.16",
     "@types/jest-image-snapshot": "4.1.3",
-    "@types/marked": "^4.0.1",
-    "@typescript-eslint/eslint-plugin": "^5.2.0",
-    "@typescript-eslint/parser": "^5.2.0",
-    "eslint": "^8.1.0",
+    "@types/marked": "4.0.1",
+    "@typescript-eslint/eslint-plugin": "5.2.0",
+    "@typescript-eslint/parser": "5.2.0",
+    "eslint": "8.1.0",
     "eslint-config-prettier": "6.14.0",
     "eslint-plugin-jest": "25.2.2",
     "eslint-plugin-prettier": "3.3.0",
-    "jest": "^27.3.1",
-    "jest-circus": "^27.3.1",
-    "jest-environment-node": "^27.3.1",
+    "jest": "27.3.1",
+    "jest-circus": "27.3.1",
+    "jest-environment-node": "27.3.1",
     "jest-image-snapshot": "4.2.0",
     "js-green-licenses": "2.0.1",
     "marked": "4.0.10",
     "npm-run-all": "4.1.5",
-    "postcss": "^8.3.2",
+    "postcss": "8.3.2",
     "prettier": "2.1.2",
     "puppeteer": "10.1.0",
-    "stylelint": "^14.2.0",
+    "stylelint": "14.2.0",
     "stylelint-config-prettier": "9.0.3",
     "stylelint-config-recommended": "6.0.0",
     "stylelint-config-standard": "24.0.0",
     "stylelint-order": "5.0.0",
     "stylelint-prettier": "2.0.0",
-    "ts-jest": "^27.0.7",
+    "ts-jest": "27.0.7",
     "typescript": "4.0.3"
   }
 }