In CI, ensure only one run per PR/branch happens at a time (#382)

nathanjmcdougall · web-flow · commit 74ae4d95d621 · 2025-03-05T12:38:01.000+13:00
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -4,6 +4,9 @@ on:
   push:
     branches: ['main']
   pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 jobs:
   tests:
     runs-on: ${{ matrix.os }}
