Update cppcheck and clang-tidy...

[Jason2866]

Description:

to actual versions

Checklist:

• The pull request is done against the latest develop branch
• Only relevant files were touched
• Only one feature/fix was added per PR, more changes are allowed when changing boards.json
• I accept the CLA

Summary by CodeRabbit

• Chores
  • Updated cppcheck to version 2.19.1
  • Updated clang-tidy to version 21.1.0

[Jason2866]

@coderabbitai full review

[coderabbitai]

✅ Actions performed

Full review triggered.

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request updates dependency tool versions in platform.json. The cppcheck tool is upgraded from version 2.11.0+230717 to 2.19.1, and clangtidy is upgraded from 18.1.1 to 21.1.0, with corresponding version URLs updated.

Changes

Cohort / File(s)	Summary
Tool Version Updates platform.json	Updated package versions and URLs for two tools: cppcheck (2.11.0+230717 → 2.19.1) and clangtidy (18.1.1 → 21.1.0).

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• Remove all dependencies to Platformio registry #160 — Updates the same tool package entries (tool-cppcheck and tool-clangtidy) in platform.json with version and URL field changes.
• Add tl-install to install tools not in pio registry. Using for install of newer OpenOCD #148 — Modifies identical platform.json tool package entries for cppcheck and clangtidy version synchronization.

Poem

🐰 Hop along with upgraded tools so fine,
Cppcheck and clangtidy in new designs,
Version bumps that make the code shine,
Newer checks and sharper lines! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Update cppcheck and clang-tidy...' directly matches the main change: updating versions of cppcheck and clang-tidy tools in platform.json.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch upd_check_tools

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