chore: Add beta branch to GitHub Actions deploy workflow

.github/workflows/deploy-beta.yml

@@ -1,8 +1,9 @@
 name: Deploy Beta
 
 on:
-  push: {}
-  pull_request: {}
+  push:
+    branches:
+      - beta
 
 jobs:
   deploy:
@@ -20,7 +21,6 @@ jobs:
         env:
           NODE_ENV: production
       - name: Set up SSH
-        if: github.event_name == 'push' && github.ref_name == github.event.repository.default_branch
         run: |
           mkdir ~/.ssh
           echo "${{ secrets.BETA_SSH_PUBLIC_KEY }}" > ~/.ssh/id_ed25519.pub
@@ -28,6 +28,5 @@ jobs:
           chmod 600 ~/.ssh/*
           ssh-keyscan -H ${{ secrets.BETA_SSH_HOST }} >> ~/.ssh/known_hosts
       - name: Deploy build on server
-        if: github.event_name == 'push' && github.ref_name == github.event.repository.default_branch
         run: | 
           rsync --del --no-times --checksum -vrm dist/* ${{ secrets.BETA_SSH_USER }}@${{ secrets.BETA_SSH_HOST }}:${{ secrets.BETA_DESTINATION_DIR }}