try running in parallel

.github/workflows/foundry.yml

@@ -18,7 +18,7 @@ env:
 # Automatically cancels a job if a new commit if pushed to the same PR, branch, or tag.
 # Source: <https://stackoverflow.com/a/72408109/5148606>
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}-foundry
   # Except in `nightly` and `stable` branches! Any cancelled job will cause the
   # CI run to fail, and we want to keep a clean history for major branches.
   cancel-in-progress: ${{ (github.ref != 'refs/heads/nightly') && (github.ref != 'refs/heads/stable') }}