ci: Don't semver-check if cargo check fails (#1602)

~Waiting for CQCL/hugrverse-actions#15 to get
merged, so we don't slow down the checks too much.~

.github/workflows/ci-rs.yml

@@ -238,7 +238,7 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
 
   rs-semver-checks:
-    needs: changes
+    needs: [changes, check]
     if: ${{ needs.changes.outputs.rust == 'true' && github.event_name == 'pull_request' }}
     uses: CQCL/hugrverse-actions/.github/workflows/rs-semver-checks.yml@main
     with: