Added security scan for release branch 8.3

Author: en-jschuetze

.github/workflows/security-scan.yml

@@ -22,6 +22,7 @@ jobs:
           - 'release/8.1'
           - 'release/8.2'
           - 'release/8.2-zts'
+          - 'release/8.3'
     steps:
       -   name: "Checkout code"
           uses: actions/checkout@v3