fix: cache path

Author: MounirAbdousNventive

azure-pipeline/build_frontend.yml

@@ -61,7 +61,7 @@ jobs:
           restoreKeys: |
             yarn | "$(Agent.OS)"
             yarn
-          path: $(Pipeline.Workspace)/.yarn/cache
+          path: $(System.DefaultWorkingDirectory)/frontend/.yarn/cache
         continueOnError: true
 
       # ---------------------------------------------------
@@ -74,7 +74,7 @@ jobs:
         displayName: "📥 Install dependencies"
         workingDirectory: $(System.DefaultWorkingDirectory)/frontend
         env:
-          YARN_CACHE_FOLDER: $(Pipeline.Workspace)/.yarn/cache
+          YARN_CACHE_FOLDER: $(System.DefaultWorkingDirectory)/frontend/.yarn/cache
 
       # ---------------------------------------------------
       # Code Quality Checks (PR only)