chore(release): v2.1.1

[CybotTM]

Patch release v2.1.1.

• Changed: dependency updates (Renovate); CI now uses org reusable workflows.
• Fixed: suppress always-true PHPStan narrowing on the Composer tryComposer guard.

CHANGELOG updated; added .markdownlint.json (MD024 siblings_only) so repeated Keep-a-Changelog section headings across releases don't trip future markdown linting.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[gemini-code-assist]

Code Review

This pull request adds a .markdownlint.json configuration file to allow duplicate headings for siblings, and updates the CHANGELOG.md for version 2.1.1. The review feedback suggests splitting a combined changelog entry into separate bullet points to preserve granularity and improve readability.

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[gemini-code-assist]

To maintain readability and preserve granularity in the changelog, consider splitting these two distinct changes into separate bullet points.

Suggested change

	- Dependency updates (Renovate); CI now uses org reusable workflows.
	- Dependency updates (Renovate).
	- CI now uses org reusable workflows.

References

1. Preserve granularity in changelog entries. Avoid folding distinct changes into a single bullet point to ensure they remain searchable and consistent with the detail level of previous releases.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.71%. Comparing base (0ac7397) to head (3c39fe0).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main      #86   +/-   ##
=========================================
  Coverage     66.71%   66.71%           
  Complexity      807      807           
=========================================
  Files            45       45           
  Lines          2289     2289           
=========================================
  Hits           1527     1527           
  Misses          762      762           

Flag	Coverage Δ
unittests	66.71% <ø> (ø)

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[Copilot]

Pull request overview

Patch release housekeeping for v2.1.1, updating the project changelog and adding a markdownlint configuration to support Keep a Changelog formatting without lint noise.

Changes:

• Added v2.1.1 release notes to CHANGELOG.md and updated reference links ([Unreleased], [2.1.1]).
• Added .markdownlint.json configuring MD024 with siblings_only to allow repeated section headings across releases.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
CHANGELOG.md	Adds the v2.1.1 entry and updates compare/reference links to align with Keep a Changelog conventions.
.markdownlint.json	Configures markdownlint to avoid false positives for repeated headings in a Keep a Changelog-style file.

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