more github action updates

Author: morganisok

.github/workflows/deploy.yml

@@ -9,7 +9,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: WordPress Plugin Deploy
-        uses: 10up/action-wordpress-plugin-deploy@master
+        uses: 10up/action-wordpress-plugin-deploy@stable
         env:
           SVN_PASSWORD: ${{ secrets.SVN_PASSWORD }}
-          SVN_USERNAME: ${{ secrets.SVN_USERNAME }}
+          SVN_USERNAME: ${{ secrets.SVN_USERNAME }}