Add action to assign label "dev-dependencies" to Dependabot PR's

.github/release-drafter.yml

@@ -15,6 +15,7 @@ categories:
       - 'dependencies'
 exclude-labels:
   - 'DevOps'
+  - 'dev-dependencies'
 change-template: '- $TITLE @$AUTHOR (#$NUMBER)'
 change-title-escapes: '\<*_&' # You can add # and @ to disable mentions, and add ` to disable code blocks.
 version-resolver:

.github/workflows/post-dependabot-prs.yml

@@ -0,0 +1,22 @@
+  name: Dependabot Pull Request
+  on: pull_request_target
+  jobs:
+    build:
+      runs-on: ubuntu-latest
+      if: ${{ github.event.pull_request.user.login == 'dependabot[bot]' }}
+      steps:
+        - name: Fetch Dependabot metadata
+          id: dependabot-metadata
+          uses: dependabot/fetch-metadata@v1
+          with:
+            github-token: "${{ secrets.GITHUB_TOKEN }}"
+        - name: Add dev-dependencies label
+          uses: actions-ecosystem/action-add-labels@v1
+          if: ${{ steps.dependabot-metadata.outputs.dependency-type == 'direct:development' }}
+          with:
+            labels: dev-dependencies
+        - name: Remove dependencies label
+          uses: actions-ecosystem/action-remove-labels@v1
+          if: ${{ steps.dependabot-metadata.outputs.dependency-type == 'direct:development' }}
+          with:
+            labels: dependencies