Enable yarn cache in GitHub Actions workflows (facebook#4521)

Author: clicktodev

.github/workflows/pre-merge.yml

@@ -12,20 +12,21 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Enable Corepack
+        run: corepack enable
+
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
           node-version: "20"
-
-      - name: Enable Corepack
-        run: corepack enable
+          cache: "yarn"
 
       - name: Check dependencies
         run: yarn dedupe --check
 
       - name: Install dependencies
         run: yarn install --immutable
-    
+
       - name: Run Lint
         run: yarn ci:lint
         working-directory: website
@@ -36,13 +37,14 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Enable Corepack
+        run: corepack enable
+
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
           node-version: "20"
-
-      - name: Enable Corepack
-        run: corepack enable
+          cache: "yarn"
 
       - name: Install dependencies
         run: yarn install --immutable