.github/workflows: update node version to 18

Change-Id: I2e0b1f6b03673ceb4e5931b300789ae3b09dd07b
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/451357
TryBot-Result: kokoro <noreply+kokoro@google.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: Jamal Carvalho <jamal@golang.org>
diff --git a/.github/workflows/release-nightly.yml b/.github/workflows/release-nightly.yml
index 1da361c..682cb7c 100644
--- a/.github/workflows/release-nightly.yml
+++ b/.github/workflows/release-nightly.yml
@@ -23,7 +23,7 @@
       - name: Setup Node
         uses: actions/setup-node@v3
         with:
-         node-version: '16'
+         node-version: '18'
          cache: 'npm'
 
       - name: Setup Go
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 46bba60..342a43f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -43,7 +43,7 @@
       - name: Setup Node
         uses: actions/setup-node@v3
         with:
-          node-version: '16'
+          node-version: '18'
           cache: 'npm'
 
       - name: get release version
diff --git a/.github/workflows/test-long-all.yml b/.github/workflows/test-long-all.yml
index 0a39a63..2b700b9 100644
--- a/.github/workflows/test-long-all.yml
+++ b/.github/workflows/test-long-all.yml
@@ -26,7 +26,7 @@
       - name: Setup Node
         uses: actions/setup-node@v3
         with:
-         node-version: '16'
+         node-version: '18'
          cache: 'npm'
 
       - name: Setup Go
diff --git a/.github/workflows/test-long.yml b/.github/workflows/test-long.yml
index 79b783d..634ac58 100644
--- a/.github/workflows/test-long.yml
+++ b/.github/workflows/test-long.yml
@@ -25,7 +25,7 @@
       - name: Setup Node
         uses: actions/setup-node@v3
         with:
-         node-version: '16'
+         node-version: '18'
          cache: 'npm'
 
       - name: Setup Go
diff --git a/.github/workflows/test-smoke.yml b/.github/workflows/test-smoke.yml
index 2c24d20..46bd23e 100644
--- a/.github/workflows/test-smoke.yml
+++ b/.github/workflows/test-smoke.yml
@@ -24,7 +24,7 @@
       - name: Setup Node
         uses: actions/setup-node@v3
         with:
-         node-version: '16'
+         node-version: '18'
          cache: 'npm'
 
       - name: Setup Go