feat(ci): add concurrency control to all BrowserStack workflows

Add concurrency control to cancel old workflow runs when new commits are pushed:
- group: ${{ github.workflow }}-${{ github.ref }}
- cancel-in-progress: true

This prevents:
- Wasting BrowserStack minutes on outdated commits
- Queue saturation from rapid consecutive pushes
- Running multiple builds of same workflow simultaneously

Different workflows still run in parallel (e.g., Swift + Android both run).
Only cancels older runs of SAME workflow on SAME branch/PR.

Author: Teodor Ciuraru

.github/workflows/android-cpp-ci.yml

@@ -12,6 +12,10 @@ on:
       - ".github/workflows/android-cpp-ci.yml"
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint (ubuntu-latest)

.github/workflows/android-java-ci.yml

@@ -4,6 +4,10 @@ on:
   pull_request:
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint (ubuntu-latest)
@@ -327,4 +331,4 @@ jobs:
           echo "- Samsung Galaxy S23 (Android 13)" >> $GITHUB_STEP_SUMMARY
           echo "- Google Pixel 6 (Android 12)" >> $GITHUB_STEP_SUMMARY
           echo "- OnePlus 9 (Android 11)" >> $GITHUB_STEP_SUMMARY
-        fi
+        fi

.github/workflows/android-kotlin-ci.yml

@@ -7,6 +7,10 @@ on:
       - ".github/workflows/android-kotlin-ci.yml"
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint (ubuntu-latest)

.github/workflows/dotnet-maui-ci.yml

@@ -7,6 +7,10 @@ on:
       - ".github/workflows/dotnet-maui-ci.yml"
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint

.github/workflows/flutter-ci.yml

@@ -7,6 +7,10 @@ on:
       - ".github/workflows/flutter-ci.yml"
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint

.github/workflows/java-spring-ci.yml

@@ -9,6 +9,10 @@ on:
   pull_request:
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 
 jobs:
   lint:

.github/workflows/javascript-web-ci.yml

@@ -7,6 +7,10 @@ on:
       - ".github/workflows/javascript-web-ci.yml"
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint

.github/workflows/kotlin-multiplatform-ci.yml

@@ -4,6 +4,10 @@ on:
   pull_request:
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 
 jobs:
   lint:
@@ -523,4 +527,4 @@ jobs:
           echo "### BrowserStack Session" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "🤖 [View Android Test Results](https://app-automate.browserstack.com/builds?project=QuickStart+Kotlin+Multiplatform&build=CI+Build+%23${{ github.run_number }})" >> $GITHUB_STEP_SUMMARY
-        fi
+        fi

.github/workflows/react-native-ci.yml

@@ -7,6 +7,10 @@ on:
       - ".github/workflows/react-native-ci.yml"
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint

.github/workflows/react-native-expo-ci.yml

@@ -7,6 +7,10 @@ on:
       - ".github/workflows/react-native-expo-ci.yml"
   workflow_dispatch:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint