Update Node.js to v24.21.0

Release-Bump: minor

.gitea/workflows/registry-cleanup.yml

@@ -19,4 +19,4 @@ jobs:
         run: |
           docker run --rm -v "$PWD:/repo" -w /repo \
             -e REGISTRY_TOKEN -e REGISTRY_USER -e REPO_TOKEN -e REPOSITORY -e SERVER_URL \
-            node:24.20.0-alpine3.24 node registry-cleanup/cleanup.ts
+            node:24.21.0-alpine3.24 node registry-cleanup/cleanup.ts

.gitea/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
           GIT_TAG: ${{ github.ref_name }}
         run: |
           set -euo pipefail
-          docker run --rm -v "$PWD:/repo" -w /repo node:24.20.0-alpine3.24 \
+          docker run --rm -v "$PWD:/repo" -w /repo node:24.21.0-alpine3.24 \
             node release-tooling/contract-version.ts "$GIT_TAG" src/plugin-host/plugin.ts
       - name: Promote the commit-hash image to semver + latest
         env:
@@ -98,9 +98,9 @@ jobs:
           VERSION=${INPUT_VERSION:-${GIT_TAG#v}}
           VERSION=${VERSION#v}
           # An empty dispatch input falls back to the branch name, so gate this like a tag.
-          docker run --rm -v "$PWD:/repo" -w /repo node:24.20.0-alpine3.24 \
+          docker run --rm -v "$PWD:/repo" -w /repo node:24.21.0-alpine3.24 \
             node release-tooling/contract-version.ts "$VERSION" src/plugin-host/plugin.ts
           docker run --rm -v "$PWD:/repo" -w /repo \
             -e DOCKERHUB_REPO -e DOCKERHUB_TOKEN -e DOCKERHUB_USER \
-            node:24.20.0-alpine3.24 \
+            node:24.21.0-alpine3.24 \
             node release-tooling/dockerhub-overview.ts "$VERSION"

.gitea/workflows/renovate.yml

@@ -58,11 +58,11 @@ jobs:
           if [ -z "$BUMPS" ]; then
             echo "Renovate commits since ${LATEST}, but none carry Release-Bump — nothing reached a running Plainpages; skipping"; exit 0
           fi
-          NEXT=$(docker run --rm -v "$PWD:/repo" -w /repo node:24.20.0-alpine3.24 \
+          NEXT=$(docker run --rm -v "$PWD:/repo" -w /repo node:24.21.0-alpine3.24 \
                  node release-tooling/next-version.ts "$LATEST" $BUMPS)
           # Read the constant off origin/main, not the checkout, which lags the merges this run made.
           git show origin/main:src/plugin-host/plugin.ts \
-            | docker run -i --rm -v "$PWD:/repo" -w /repo node:24.20.0-alpine3.24 \
+            | docker run -i --rm -v "$PWD:/repo" -w /repo node:24.21.0-alpine3.24 \
                      node release-tooling/contract-version.ts "$NEXT" -
           echo "Releasing $LATEST -> $NEXT"
           git tag "$NEXT" origin/main