Define action version to Git action (#2875)

Author: cesnietor

.github/workflows/issues.yaml

@@ -12,7 +12,7 @@ jobs:
     name: Add issue to project
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/add-to-project@RELEASE_VERSION
+      - uses: actions/add-to-project@v0.5.0
         with:
           project-url: https://github.com/orgs/miniohq/projects/2
           github-token: ${{ secrets.BOT_PAT }}