ci(labeler): update labeler configuration and workflow

- add quotes around color values in labels.yml
- expand push paths to include pull requests
- add dry-run option for pull requests
- specify github-token and yaml-file explicitly
- exclude labels matching help* and *issue patterns

.github/labels.yml

@@ -6,61 +6,61 @@
 # the GitHub Action https://github.com/marketplace/actions/github-labeler.
 - name: breaking
   description: Breaking Changes
-  color: bfd4f2
+  color: "bfd4f2"
 - name: bug
   description: Something isn't working
-  color: d73a4a
+  color: "d73a4a"
 - name: build
   description: Build System and Dependencies
-  color: bfdadc
+  color: "bfdadc"
 - name: ci
   description: Continuous Integration
-  color: 4a97d6
+  color: "4a97d6"
 - name: dependencies
   description: Pull requests that update a dependency file
-  color: 0366d6
+  color: "0366d6"
 - name: documentation
   description: Improvements or additions to documentation
-  color: 0075ca
+  color: "0075ca"
 - name: duplicate
   description: This issue or pull request already exists
-  color: cfd3d7
+  color: "cfd3d7"
 - name: enhancement
   description: New feature or request
-  color: a2eeef
+  color: "a2eeef"
 - name: github_actions
   description: Pull requests that update Github_actions code
   color: "000000"
 - name: good first issue
   description: Good for newcomers
-  color: 7057ff
+  color: "7057ff"
 - name: help wanted
   description: Extra attention is needed
-  color: 008672
+  color: "008672"
 - name: invalid
   description: This doesn't seem right
-  color: e4e669
+  color: "e4e669"
 - name: performance
   description: Performance
   color: "016175"
 - name: python
   description: Pull requests that update Python code
-  color: 2b67c6
+  color: "2b67c6"
 - name: question
   description: Further information is requested
-  color: d876e3
+  color: "d876e3"
 - name: refactoring
   description: Refactoring
-  color: ef67c4
+  color: "ef67c4"
 - name: removal
   description: Removals and Deprecations
-  color: 9ae7ea
+  color: "9ae7ea"
 - name: style
   description: Style
-  color: c120e5
+  color: "c120e5"
 - name: testing
   description: Testing
-  color: b1fc6f
+  color: "b1fc6f"
 - name: wontfix
   description: This will not be worked on
-  color: ffffff
+  color: "ffffff"

.github/workflows/labeler.yml

@@ -2,10 +2,15 @@ name: Labeler
 
 on:
   push:
-    branches: [main]
+    branches:
+      - 'main'
     paths:
-      - .github/labels.yml
-      - .github/workflows/labeler.yml
+      - '.github/labels.yml'
+      - '.github/workflows/labels.yml'
+  pull_request:
+    paths:
+      - '.github/labels.yml'
+      - '.github/workflows/labels.yml'
 
 permissions:
   contents: read
@@ -22,4 +27,10 @@ jobs:
       - name: Run Labeler
         uses: crazy-max/ghaction-github-labeler@b54af0c25861143e7c8813d7cbbf46d2c341680c # v5.1.0
         with:
-          skip-delete: true
+          skip-delete: true
+          dry-run: ${{ github.event_name == 'pull_request' }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          yaml-file: .github/labels.yml
+          exclude: |
+            help*
+            *issue