ci: follow upstream Go version

.github/workflows/build-and-publish.yml

@@ -53,7 +53,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v6
         with:
-          go-version: "1.22"
+          go-version-file: ./custom/go.mod
           cache-dependency-path: ./custom/go.sum
 
       - name: Generate and process domain lists