Fix issue pattern matching in get_release_notes.py

Updated the regex handling to capture issue keys correctly from commit messages. This ensures that both formats `[#ISSUE-123]` and `[ISSUE-123]` are properly identified and added.

Author: meanmail

get_release_notes.py

@@ -118,7 +118,7 @@ def extract_issues(commit: str) -> tuple[str, ...]:
     """Return issues from commit."""
     issues = set()
     pattern = re.compile(r'[#^]([A-Z]+-\d+)|^\[([A-Z]+-\d+)]')
-    issues.update(match[0] for match in pattern.findall(commit))
+    issues.update(match[0] or match[1] for match in pattern.findall(commit))
     return tuple(issues)