renovate: Update actions/setup-go action to v6

Author: renovate[bot]

.github/workflows/sonar.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v5
 
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: '1.25'
 

.github/workflows/test.yml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v5
 
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go }}