Bump actions/setup-node from 2.4.1 to 2.5.1 (#43570)

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 2.4.1 to 2.5.1.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v2.4.1...v2.5.1)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/bump-version.yml

@@ -78,7 +78,7 @@ jobs:
           repository: "grafana/grafana-github-actions"
           path: ./actions
           ref: main
-      - uses: actions/setup-node@v2.4.1
+      - uses: actions/setup-node@v2.5.1
         with:
           node-version: '14'
       - name: Install Actions

.github/workflows/detect-breaking-changes-build.yml

@@ -13,7 +13,7 @@ jobs:
     - uses: actions/checkout@v2
 
     - name: Setup environment
-      uses: actions/setup-node@v2
+      uses: actions/setup-node@v2.5.1
       with:
         node-version: '16'
 

.github/workflows/publish.yml

@@ -17,7 +17,7 @@ jobs:
     - uses: actions/checkout@v1
     - run: git clone --single-branch --no-tags --depth 1 -b master https://grafanabot:${{ secrets.GH_BOT_ACCESS_TOKEN }}@github.com/grafana/website-sync ./.github/actions/website-sync
     - name: generate-packages-docs
-      uses: actions/setup-node@v2.4.1
+      uses: actions/setup-node@v2.5.1
       id: generate-docs
       with:
         node-version: '14'