Release: Include 4.5 LTS gitea issue in notes generator

Include the issue number so we don't have to specify this for 4.5 versions.

Pull Request: https://projects.blender.org/blender/blender/pulls/144865

release/lts/create_release_notes.py

@@ -49,6 +49,8 @@ def main() -> int:
             issue = "#109399"
         elif version.startswith("4.2."):
             issue = "#124452"
+        elif version.startswith("4.5."):
+            issue = "#141871"
         else:
             raise ValueError("Specify --issue or update script to include issue number for this version")