refactor: fix workflow

Author: ayuki-joto

.github/workflows/dev_synth.yml

@@ -19,21 +19,25 @@ jobs:
       id-token: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v5
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v5
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - name: Install Dependencies
+        run: npm install
 
       - name: aws switch role
         uses: aws-actions/configure-aws-credentials@v1
         with:
           role-to-assume: ${{ env.AWS_ROLE_ARN }}
           aws-region: ap-northeast-1
 
-      - name: cdk synth
-        uses: youyo/aws-cdk-github-actions@v2
-        with:
-          cdk_subcommand: 'synth'
-          cdk_version: '2.1024.1'
-          working_dir: 'cdk'
-          cdk_args: '--context stage=dev'
+      - name: CDK Synth
+        run: npx cdk synth --context stage=dev
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           AWS_DEFAULT_REGION: 'ap-northeast-1'

.github/workflows/test.yml

@@ -18,9 +18,9 @@ jobs:
         node: [ '22' ]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v5
       - name: Setup NodeJs
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v5
         with:
           node-version: ${{ matrix.node }}
       - name: Install Dependencies