ENH: GHA: cancel in progress builds for pull requests

Based on InsightSoftwareConsortium/ITK#5019.

Author: Simon Rit

.github/workflows/build-test-cxx-cuda.yml

@@ -6,6 +6,10 @@ env:
   itk-git-tag: "v5.4.0"
   itk-module-deps: "CudaCommon@cae7c93c2f6d4c5b3cb5f6e5ce4a97686e626bf7"
 
+concurrency:
+  group: '${{ github.workflow }}@${{ github.head_ref || github.run_id }}'
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   build-test-cxx:
     runs-on: ${{ matrix.os }}

.github/workflows/build-test-package-python-cuda.yml

@@ -8,6 +8,10 @@ env:
   itk-python-package-org: 'SimonRit'
   itk-module-deps: "RTKConsortium/ITKCudaCommon@cae7c93c2f6d4c5b3cb5f6e5ce4a97686e626bf7"
 
+concurrency:
+  group: '${{ github.workflow }}@${{ github.head_ref || github.run_id }}'
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   build-linux-cuda-python-packages:
     runs-on: self-hosted-linux

.github/workflows/build-test-package.yml

@@ -2,6 +2,10 @@ name: Build, test, package
 
 on: [push,pull_request]
 
+concurrency:
+  group: '${{ github.workflow }}@${{ github.head_ref || github.run_id }}'
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   cxx-build-workflow:
     uses: InsightSoftwareConsortium/ITKRemoteModuleBuildTestPackageAction/.github/workflows/build-test-cxx.yml@v5.4.0