add(template): Add version 3.0.3 to the Issue template (#10042)

To be merged after release

Author: me-no-dev

.github/ISSUE_TEMPLATE/Issue-report.yml

@@ -41,6 +41,7 @@ body:
       options:
         - latest master (checkout manually)
         - latest development Release Candidate (RC-X)
+        - v3.0.3
         - v3.0.2
         - v3.0.1
         - v3.0.0