Update CI/CD workflow to trigger releases on labeled pull requests

- Modified the workflow to include pull request events with a 'labeled' type for triggering releases.
- Adjusted the release job condition to allow releases from both push events and labeled pull requests.

Author: ndelangen

.github/workflows/publish.yml

@@ -1,6 +1,9 @@
 name: CI/CD
 
-on: [push, pull_request]
+on:
+  push:
+  pull_request:
+    types: [labeled]
 
 env:
   CI: true
@@ -55,7 +58,9 @@ jobs:
     name: Release
     runs-on: ubuntu-latest
     needs: test
-    if: github.event_name == 'push' && !contains(github.event.head_commit.message, 'ci skip') && !contains(github.event.head_commit.message, 'skip ci')
+    if: |
+      (github.event_name == 'push' && !contains(github.event.head_commit.message, 'ci skip') && !contains(github.event.head_commit.message, 'skip ci')) ||
+      (github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'release'))
     steps:
       - uses: actions/checkout@v4
         with: