Update actions/setup-go to v6 (#187)

Author: mrclmr

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
       uses: actions/checkout@v5
 
     - name: Setup Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version-file: 'go.mod'