chore(deps): update actions/add-to-project action to v0.6.1

Author: renovate[bot]

.github/workflows/issue-automation.yml

@@ -11,7 +11,7 @@ jobs:
     name: Add issue to "On Call"
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/add-to-project@v0.4.1
+    - uses: actions/add-to-project@v0.6.1
       with:
         project-url: https://github.com/orgs/sourcery-ai/projects/3
         github-token: ${{ secrets.ADD_TO_PROJECT_PAT }}