Merge pull request #21 from yuya-takeyama/renovate/actions-setup-go-4.x

Update actions/setup-go action to v4

Author: yuya-takeyama

.github/workflows/release.yaml

@@ -10,7 +10,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
       - name: Setup Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v4
         with:
           go-version: '1.15.x'
       - name: Run GoReleaser

.github/workflows/test.yaml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Setup Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v4
         with:
           go-version: '1.15.x'
       - name: Checkout