ci: update cache action path

Author: imranolas

.github/workflows/ci.yaml

@@ -26,7 +26,7 @@ jobs:
           cache: 'pnpm'
 
       - name: Cache monorepo
-        uses: ../actions/cache-monorepo
+        uses: ./.github/actions/cache-monorepo
 
       - name: Install dependencies
         run: pnpm install

.github/workflows/pr-preview.yaml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Cache monorepo
-        uses: ../actions/cache-monorepo
+        uses: ./.github/actions/cache-monorepo
 
       - name: Install pnpm
         uses: pnpm/action-setup@v2