Enhance GitHub workflows with concurrency settings

- Added concurrency configuration to both biome.yml and playwright.yml workflows.
- Ensured that in-progress jobs are canceled when a new job is triggered for the same pull request, improving resource management and build efficiency.

Author: ritz078

.github/workflows/biome.yml

@@ -4,6 +4,10 @@ on:
   push:
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   quality:
     runs-on: ubuntu-latest

.github/workflows/playwright.yml

@@ -1,9 +1,15 @@
 name: Playwright Tests
+
 on:
   push:
     branches: [main, master]
   pull_request:
     branches: [main, master]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     timeout-minutes: 60