chore(ci): only process the last commit per ref

.github/workflows/benchmark.yml

@@ -7,6 +7,10 @@ on:
   pull_request:
   workflow_dispatch:
 
+concurrency:
+  group: benchmark-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   benchmark:
     name: Benchmark ${{ matrix.archs }} ${{ matrix.build }} on ${{ matrix.os }}

.github/workflows/build-upload.yml

@@ -8,6 +8,10 @@ on:
       - "dependabot/**"
   pull_request:
 
+concurrency:
+  group: build-upload-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint

.github/workflows/coverage.yml

@@ -6,6 +6,10 @@ on:
       - "dependabot/**"
   pull_request:
 
+concurrency:
+  group: coverage-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build_sdist:
     name: Coverage

.github/workflows/msys2.yml

@@ -6,6 +6,10 @@ on:
       - "dependabot/**"
   pull_request:
 
+concurrency:
+  group: msys2-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     name: Test with MSYS2 ${{ matrix.sys }}

.github/workflows/test.yml

@@ -6,6 +6,10 @@ on:
       - "dependabot/**"
   pull_request:
 
+concurrency:
+  group: test-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     name: Test

.github/workflows/valgrind.yml

@@ -6,6 +6,10 @@ on:
       - "dependabot/**"
   pull_request:
 
+concurrency:
+  group: valgrind-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build_sdist:
     name: Valgrind