ci: only fail fast in merge groups

Author: danielroe

.github/workflows/ci.yml

@@ -80,6 +80,7 @@ jobs:
     needs: changes
     if: needs.changes.outputs.src == 'true'
     strategy:
+      fail-fast: ${{ github.event_name == 'merge_group' }}
       matrix:
         os: [ubuntu-latest, windows-latest]
     runs-on: ${{ matrix.os }}