Update actions/setup-go to v6

Author: mbrukman

.github/workflows/go.yaml

@@ -94,7 +94,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go }}