update vanity-go

Author: nikandfor

.github/workflows/vanity.yaml

@@ -24,7 +24,7 @@ jobs:
         with:
           vanity_file: vanity.yaml
           output_dir: _site
-          generator_version: master
+          generator_version: bea76da
 
       - name: Setup Pages
         uses: actions/configure-pages@v5