chore: ugprade GH action to add issues to project (#110)

.github/workflows/add-action-project.yml

@@ -3,13 +3,15 @@ name: Add new issues to Waku project board
 on:
   issues:
     types: [opened]
+  pull_request:
+    types: [opened]
 
 jobs:
   add-to-project:
     name: Add issue to project
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/add-to-project@v0.3.0
+      - uses: actions/add-to-project@v0.5.0
         with:
           project-url: https://github.com/orgs/waku-org/projects/2
           github-token: ${{ secrets.ADD_TO_PROJECT_PAT }}