Add missing Nextcloud v30

Signed-off-by: Melroy van den Berg <melroy@melroy.org>

Author: melroy89

.github/ISSUE_TEMPLATE/BUG_REPORT.yml

@@ -72,6 +72,7 @@ body:
       options:
         - "28"
         - "29"
+        - "30"
         - "master"
     validations:
       required: true