ci(github): add concurrency settings to prevent multiple builds for the same PR

Author: brionmario

.github/workflows/pr-builder.yml

@@ -10,6 +10,11 @@ on:
       - "LICENSE"
   workflow_dispatch:
 
+# Avoid running multiple builds for the same PR.
+concurrency:
+  group: pr-builder-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
@@ -118,7 +123,7 @@ jobs:
       - name: 🧩 Install Dependencies
         id: install-dependencies
         run: pnpm install
-        
+
       - name: 🏗️ Build
         id: build
         run: pnpm build
@@ -170,7 +175,7 @@ jobs:
       - name: 🧩 Install Dependencies
         id: install-dependencies
         run: pnpm install
-        
+
       - name: 🏗️ Build
         id: build
         run: pnpm build