Upgrade to nodejs v20.12.2

Add Node builds to GitLab-related images in preparation
for upgrading.

Relates to
https://gitlab.com/gitlab-org/gitlab-development-kit/-/issues/2081

.gitlab/ci/cng-images.yml

@@ -3,7 +3,7 @@
   variables:
     LFS: '2.9'
     CHROME: '119'
-    NODE: '18.17'
+    NODE: '20.12'
     YARN: '1.22'
     GRAPHICSMAGICK: '1.3.36'
     POSTGRESQL: '11'

.gitlab/ci/gitlab.images.yml

@@ -39,14 +39,14 @@ gitlab:
     ARCH: linux/amd64,linux/arm64
     GIT: '2.36'
     RUST: '1.73'
-    NODE: '18.17'
   parallel:
     matrix:
       - OS: ['debian:bookworm', 'debian:bookworm-slim']
         RUBY: ['3.0.patched', '3.1.patched', '3.2.patched']
         POSTGRESQL: ['13', '14', '15', '16']
-        GOLANG: ['1.20', '1.21', '1.22']
-        CHROME: ['120', '123']
+        GOLANG: ['1.21', '1.22']
+        CHROME: ['120']
+        NODE: ['18.17', '20.12']
 
 # Used by GitLab's compile-production-assets and compile-test-assets jobs
 gitlab-assets:
@@ -64,7 +64,7 @@ gitlab-assets:
       - OS: ['debian:bookworm']
         RUBY: ['3.0', '3.1', '3.2']
         GIT: ['2.33']
-        NODE: ['18.17']
+        NODE: ['18.17', '20.12']
 
 # Used by GitLab's Review app jobs and triage-ops
 ep-native-cloud-services:

.gitlab/ci/kas.images.yml

@@ -16,7 +16,6 @@ gitlab-kas:
     RUST: '1.73'
     LFS: '2.9'
     CHROME: '119'
-    NODE: '18.17'
     YARN: '1.22'
     GRAPHICSMAGICK: '1.3.36'
     GIT: '2.36'
@@ -24,3 +23,4 @@ gitlab-kas:
   parallel:
     matrix:
       - RUBY: ['3.0.patched', '3.1.patched', '3.2.patched']
+        NODE: ['18.17', '20.12']

scripts/lib/custom-docker-build

@@ -153,7 +153,7 @@ function print_lfs_args() {
 function print_node_args() {
     case "$1" in
         18|18.17) NODE_INSTALL_VERSION=18.17.1 ;;
-        20|20.9) NODE_INSTALL_VERSION=20.9.0 ;;
+        20|20.12) NODE_INSTALL_VERSION=20.12.2 ;;
         *) fail "Unknown node version $1" ;;
     esac
     printf -- "--build-arg NODE_INSTALL_VERSION=%s " "$NODE_INSTALL_VERSION"