internal/history: document Go 1.21.7 and Go 1.20.14

Change-Id: I4a636df763d9f9dc4afaf9265c0c48207dd84923
Reviewed-on: https://go-review.googlesource.com/c/website/+/562096
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
diff --git a/internal/history/release.go b/internal/history/release.go
index 49af6b4..68a9adc 100644
--- a/internal/history/release.go
+++ b/internal/history/release.go
@@ -15,6 +15,19 @@
 // The table is sorted by date, breaking ties with newer versions first.
 var Releases = []*Release{
 	{
+		Date: Date{2024, 2, 6}, Version: Version{1, 21, 7},
+		Bug: &FixSummary{
+			Components: []template.HTML{"the compiler", "the <code>go</code> command", "the runtime"},
+			Packages:   []string{"crypto/x509"},
+		},
+	},
+	{
+		Date: Date{2024, 2, 6}, Version: Version{1, 20, 14},
+		Bug: &FixSummary{
+			Packages: []string{"crypto/x509"},
+		},
+	},
+	{
 		Date: Date{2024, 1, 9}, Version: Version{1, 21, 6},
 		Bug: &FixSummary{
 			Components: []template.HTML{"the compiler", "the runtime"},