Upgrade the branch-label action to use Node.js v20

packages/github-actions/actions/branch-label/README.md

@@ -17,12 +17,44 @@ See [action.yml](action.yml)
 
 ```yaml
 on:
-  pull_request:
+  pull_request_target:
     types: opened
+
 jobs:
   SetLabels:
+    permissions:
+      contents: read
+      pull-requests: write
     runs-on: ubuntu-latest
     steps:
       - name: Set Labels
-        uses: woocommerce/grow/branch-label@actions-v1
+        uses: woocommerce/grow/branch-label@actions-v2
+```
+
+#### Permissions:
+
+In order to add labels to pull requests, this action requires write permissions on the pull request. However, when the action runs on a pull request from a fork, GitHub only grants read access tokens for the `pull_request` event. Therefore, it's recommended to use the `pull_request_target` event instead of `pull_request` to avoid the issue of not having permission.
+
+Ref:
+- https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request_target
+- https://github.com/actions/labeler/tree/v5#usage
+- https://github.com/actions/labeler/tree/v5#permissions
+
+## Migration from v1 to v2:
+
+```diff
+-  pull_request:
++  pull_request_target:
+     types: opened
+
+ jobs:
+   SetLabels:
++    permissions:
++      contents: read
++      pull-requests: write
+     runs-on: ubuntu-latest
+     steps:
+       - name: Set Labels
+-        uses: woocommerce/grow/branch-label@actions-v1
++        uses: woocommerce/grow/branch-label@actions-v2
 ```

packages/github-actions/actions/branch-label/action.yml

@@ -4,46 +4,11 @@ description: Set PR labels according to the branch name.
 runs:
   using: composite
   steps:
-    - uses: actions-ecosystem/action-add-labels@v1
-      if: ${{ startsWith(github.head_ref, 'breaking/') }}
-      with:
-        labels: |
-          changelog: breaking
-    - uses: actions-ecosystem/action-add-labels@v1
-      if: ${{ startsWith(github.head_ref, 'add/') }}
-      with:
-        labels: |
-          type: enhancement
-          changelog: add
-    - uses: actions-ecosystem/action-add-labels@v1
-      if: ${{ startsWith(github.head_ref, 'update/') }}
-      with:
-        labels: |
-          changelog: update
-    - uses: actions-ecosystem/action-add-labels@v1
-      if: ${{ startsWith(github.head_ref, 'fix/') }}
-      with:
-        labels: |
-          type: bug
-          changelog: fix
-    - uses: actions-ecosystem/action-add-labels@v1
-      if: ${{ startsWith(github.head_ref, 'tweak/') }}
-      with:
-        labels: |
-          changelog: tweak
-    - uses: actions-ecosystem/action-add-labels@v1
-      if: ${{ startsWith(github.head_ref, 'dev/') }}
-      with:
-        labels: |
-          changelog: dev
-    - uses: actions-ecosystem/action-add-labels@v1
-      if: ${{ startsWith(github.head_ref, 'doc/') }}
-      with:
-        labels: |
-          changelog: doc
-          type: documentation
-    - uses: actions-ecosystem/action-add-labels@v1
-      if: ${{ startsWith(github.head_ref, 'release/') }}
-      with:
-        labels: |
-          changelog: none
+    # Copy labeler.yml to the default config path of `actions/labeler`.
+    - shell: bash
+      run: |
+        CONFIG_DIR=.github
+        mkdir -p "$CONFIG_DIR"
+        cp "${{ github.action_path }}/labeler.yml" "$CONFIG_DIR"
+
+    - uses: actions/labeler@v5

packages/github-actions/actions/branch-label/labeler.yml

@@ -0,0 +1,27 @@
+"changelog: breaking":
+  - head-branch: "^breaking/"
+
+"changelog: add": &head-branch-add
+  - head-branch: "^add/"
+
+"changelog: update":
+  - head-branch: "^update/"
+
+"changelog: fix": &head-branch-fix
+  - head-branch: "^fix/"
+
+"changelog: tweak":
+  - head-branch: "^tweak/"
+
+"changelog: dev":
+  - head-branch: "^dev/"
+
+"changelog: doc": &head-branch-doc
+  - head-branch: "^doc/"
+
+"changelog: none":
+  - head-branch: "^release/"
+
+"type: enhancement": *head-branch-add
+"type: bug": *head-branch-fix
+"type: documentation": *head-branch-doc