deps(deps): update actions/setup-go action to v6

Author: renovate[bot]

.github/workflows/test.yml

@@ -28,7 +28,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: Setup Go ${{ matrix.go-version }}
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go-version }}
       - name: Run tests
@@ -58,7 +58,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Setup Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: "1.26"
           cache: true