chore(workflows): concurrency

.github/workflows/clang-format.yml

@@ -2,14 +2,18 @@ name: clang-format
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-format-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - uses: DoozyX/clang-format-lint-action@v0.16.2
-      name: clang-format
-      with:
-        source: '.'
-        extensions: 'hpp,h,cpp,c'
-        clangFormatVersion: 16    
+      - uses: actions/checkout@v3
+      - uses: DoozyX/clang-format-lint-action@v0.16.2
+        name: clang-format
+        with:
+          source: "."
+          extensions: "hpp,h,cpp,c"
+          clangFormatVersion: 16

.github/workflows/clang-tidy.yml

@@ -2,6 +2,10 @@ name: clang-tidy
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-tidy-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/freebsd.yml

@@ -2,6 +2,10 @@ name: freebsd
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-freebsd-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   clang:
     # Run actions in a FreeBSD VM on the macos-12 runner

.github/workflows/linux.yml

@@ -2,6 +2,10 @@ name: linux
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-linux-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     strategy: