[release-12.0.1] Backport workflow fixes (#104692)

* Copy workflows and actions from main

* add zizmor.yml

.github/workflows/pr-frontend-unit-tests.yml

@@ -6,8 +6,16 @@ on:
       - main
       - release-*.*.*
 
+permissions: {}
+
 jobs:
   frontend-unit-tests:
+    permissions:
+      contents: read
+      id-token: write
+    # Run this workflow only for PRs from forks; if it gets merged into `main` or `release-*`,
+    # the `frontend-unit-tests-enterprise` workflow will run instead
+    if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.fork == true
     runs-on: ubuntu-latest-8-cores
     name: "Unit tests (${{ matrix.chunk }} / 8)"
     strategy:
@@ -15,8 +23,10 @@ jobs:
       matrix:
         chunk: [1, 2, 3, 4, 5, 6, 7, 8]
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-node@v4
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
+      with:
+        persist-credentials: false
+    - uses: actions/setup-node@cdca7365b2dadb8aad0a33bc7601856ffabcc48e
       with:
         node-version-file: '.nvmrc'
         cache: 'yarn'
@@ -27,3 +37,33 @@ jobs:
         TEST_MAX_WORKERS: 2
         TEST_SHARD: ${{ matrix.chunk }}
         TEST_SHARD_TOTAL: 8
+
+  frontend-unit-tests-enterprise:
+    permissions:
+      contents: read
+      id-token: write
+    # Run this workflow for non-PR events (like pushes to `main` or `release-*`) OR for internal PRs (PRs not from forks)
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.fork == false
+    runs-on: ubuntu-latest-8-cores
+    name: "Unit tests (${{ matrix.chunk }} / 8)"
+    strategy:
+      fail-fast: false
+      matrix:
+        chunk: [1, 2, 3, 4, 5, 6, 7, 8]
+    steps:
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
+    - uses: actions/setup-node@cdca7365b2dadb8aad0a33bc7601856ffabcc48e
+      with:
+        node-version-file: '.nvmrc'
+        cache: 'yarn'
+        cache-dependency-path: 'yarn.lock'
+    - name: Setup Enterprise
+      uses: ./.github/actions/setup-enterprise
+      with:
+        github-app-name: 'grafana-ci-bot'
+    - run: yarn install --immutable --check-cache
+    - run: yarn run test:ci
+      env:
+        TEST_MAX_WORKERS: 2
+        TEST_SHARD: ${{ matrix.chunk }}
+        TEST_SHARD_TOTAL: 8