fix(conventions): accept Depends on answered as a list

[GalaxyGamingFR]

What

The pr-template check in tools/check_conventions.py only accepted Depends on: #N or none on the same line. A checklist that answers it as a bulleted list, e.g.

- [x] Depends on:
  - #3
  - #4

failed CI, although tools/pr_overlap.py parses exactly that form on purpose (test_pr_overlap_dependencies.py covers it). The pattern now allows one list marker (-, * or +) before the first answer. An empty answer followed by the next checklist item is still reported.

Tested

Windows 11, Python 3.12. No C++ changes.

• tools/tests/test_check_conventions_comments.py: new test_depends_on_answered_as_a_list_is_accepted (4 subtests: LF, CRLF, unindented, * none) fails on main and passes with this change; new test_depends_on_left_empty_before_the_next_item_is_reported passes on both.
• the tests live in the tool's existing test file, so CMakeLists.txt is unchanged.
• every tools/tests/test_*.py passes; python -I tools/check_conventions.py --base origin/main passes.

Checklist

• Based on current main; no other open PR implements the same functions
• One topic per PR; follow-ups go in a new PR
• No comments in code except technical debt
• Unimplemented paths throw (NotImplemented_nid_no_patch); silent stubs are listed under Silent stubs in their library's technical debt file
• No notes, investigation .md files or images added to the repository (attach them to this PR)
• New third-party code is a submodule built from source
• Generic behaviour, not specific to one title
• Depends on: none
• Unblocks: none
• GPUs tested: n/a
• AI-assisted: yes

🤖 Generated with Claude Code

https://claude.ai/code/session_012zyXkUzTZGh3nBwNMtrLaW

[github-actions]

Some comparisons could not be completed because a pull request conflicts with the base branch. Review these shared files manually before concluding that there is no overlap.

Pull request	Shared files not compared
#5780	tools/check_conventions.py

[adriadam10]

Checked the regex change in tools/check_conventions.py: the 4 new list subtests fail with main's checker and pass with this one, the empty-answer case is still reported, and the full test_check_conventions_comments module (61 tests) passes; merging.