Cancel workflows for previous commits in a PR when new commits are pushed

.github/workflows/android.yml

@@ -15,6 +15,10 @@ env:
   GITHUB_TOKEN: ${{ github.token }}
   xcodeVersion: "12.4"  # Only affects Mac runners, and only for prerequisites.
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   prepare_matrix:
     runs-on: ubuntu-latest

.github/workflows/checks.yml

@@ -11,6 +11,10 @@ env:
   statusLabelFailed: "tests: failed"
   skipReleaseNotesLabel: "skip-release-notes"
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   file_format_check:
     runs-on: ubuntu-latest

.github/workflows/checks_secure.yml

@@ -5,6 +5,10 @@ on:
   pull_request_target:
     types: [synchronize]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   dismiss_stale_approvals:
     # Dismiss stale approvals for non-admins or if this PR comes from a fork.

.github/workflows/desktop.yml

@@ -14,6 +14,10 @@ env:
   CCACHE_DIR: ${{ github.workspace }}/ccache_dir
   GITHUB_TOKEN: ${{ github.token }}
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   prepare_matrix:
     runs-on: ubuntu-latest

.github/workflows/ios.yml

@@ -13,6 +13,10 @@ on:
 env:
   GITHUB_TOKEN: ${{ github.token }}
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   prepare_matrix:
     runs-on: ubuntu-latest

.github/workflows/lint.yml

@@ -4,6 +4,10 @@ on:
   pull_request:
     types: [opened,synchronize]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint_warnings_check_and_comment:
     runs-on: ubuntu-latest