Stop unit tests from different PRs cancelling each other
This was originally fixed in but overwritten in a subsequent PR.
@@ -7,7 +7,7 @@ env:
CARGO_TERM_COLOR: always
concurrency:
- group: "${{ github.ref }}-${{ github.workflow }}"
+ group: "${{ github.head_ref }}-${{ github.workflow }}"
cancel-in-progress: true
jobs:
