chore: add concurrency settings to workflow files for concurrent deployments

Author: ota-meshi

.github/workflows/GHPages.yml

@@ -4,6 +4,11 @@ on:
   push:
     branches: [master]
 
+# Allow one concurrent deployment
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   deploy-docs:
     runs-on: ubuntu-latest

.github/workflows/ci.yml

@@ -6,6 +6,11 @@ on:
   pull_request:
     branches: [master]
 
+# Allow one concurrent deployment
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-and-lint:
     runs-on: ubuntu-latest

.github/workflows/format.yml

@@ -7,6 +7,11 @@ permissions:
   contents: write
   pull-requests: write
 
+# Allow one concurrent deployment
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   format:
     runs-on: ubuntu-latest

.github/workflows/test-build-resources-with-pandoc.yml

@@ -15,6 +15,11 @@ permissions:
   issues: write
   pull-requests: write
 
+# Allow one concurrent deployment
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-resources-with-pandoc:
     if: github.repository == 'future-architect/coding-standards'