Update .github/workflows/ci.yml

Author: hattya

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
       - name: Setup Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go-version }}
           cache: false