ci: fix merged notification (#94)

Author: geerteltink

.github/workflows/merged-notification.yml

@@ -6,14 +6,16 @@ on:
 
 jobs:
   comment:
-    if: github.event.pull_request.merged && github.event.pull_request.base.ref == github.event.repository.default_branch
+    if: github.event.pull_request.merged
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/github-script@626af12fe9a53dc2972b48385e7fe7dec79145c9
+      - uses: actions/github-script@v3
         with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
           script: |
             github.issues.createComment({
-              ...context.repo,
-              issue_number: context.payload.pull_request.number,
-              body: 'Thanks for contributing! Your pull request has been merged 🎉'
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: '👋 Thanks for contributing!'
             })