ci: checkout, setup-node 액션의 버전 업그레이드 (#65)

Author: Coalery

.github/workflows/coverage.yml

@@ -14,10 +14,10 @@ jobs:
     permissions: write-all
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Use Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'