Updated deploy script

Author: dcooney

.github/workflows/deploy.yml

@@ -7,6 +7,8 @@ jobs:
       name: New release
       runs-on: ubuntu-latest
       steps:
+         - name: Install Subversion
+           run: sudo apt-get update && sudo apt-get install -y subversion
          - name: Checkout code
            uses: actions/checkout@v2
          - name: WordPress Plugin Deploy