Bump actions/cache from 3 to 4

commit-id:1fd1bc9d

.github/workflows/ruby.yml

@@ -26,7 +26,7 @@ jobs:
       id: yarn-cache
       run: echo "::set-output name=dir::$(yarn cache dir)"
     - name: JS package cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ${{ steps.yarn-cache.outputs.dir }}
         key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}