Update actions/cache as v2 is deprecated (#2269)

Author: ramya-stripe

.github/workflows/main.yml

@@ -33,7 +33,7 @@ jobs:
         id: yarn-cache-dir-path
         run: echo "dir=$(yarn cache dir)" >> "$GITHUB_OUTPUT"
 
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         id: yarn-cache
         with:
           path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
@@ -90,7 +90,7 @@ jobs:
         id: yarn-cache-dir-path
         run: echo "dir=$(yarn cache dir)" >> "$GITHUB_OUTPUT"
 
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         id: yarn-cache
         with:
           path: ${{ steps.yarn-cache-dir-path.outputs.dir }}