ci: some fixes to make CI more stable (#157)

Author: holtgrewe

.github/workflows/add-issue-to-project.yml

@@ -94,5 +94,4 @@ jobs:
         uses: codecov/codecov-action@v3
         with:
           verbose: true
-          fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/add-pr-to-project.yml

@@ -1,3 +1,5 @@
+/.vscode
+
 /target
 
 *~