Bump actions/setup-go from 5 to 6 (#1033)

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -29,7 +29,7 @@ jobs:
         with:
           fetch-depth: 1
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go-version.version }}
       - name: Cache

.github/workflows/release.yaml

@@ -14,7 +14,7 @@ jobs:
         with:
           fetch-depth: 1
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: 1.25.x
       - name: Release