docs(changelog): version 1.20.0 [citest_skip]

[richm]

Update changelog and .README.html for version 1.20.0

Signed-off-by: Rich Megginson [email protected]

Summary by Sourcery

Document changes for the 1.20.0 release.

New Features:

• Document addition of Debian 13 support in the changelog.

CI:

• Record CI workflow updates including upload-artifact bump and tox-lsr version updates in the changelog.

Documentation:

• Add 1.20.0 release notes to the changelog and update the HTML README accordingly.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Updates release documentation for version 1.20.0 by adding a 1.20.0 entry to the changelog, documenting a new Debian 13 support feature and several CI-related maintenance changes.

File-Level Changes

Change	Details	Files
Document the 1.20.0 release with new features and CI maintenance items.	Add a new 1.20.0 section at the top of the changelog with release date 2026-03-16 List the new feature: initial Debian 13 support marked as WIP and associated PR reference Record CI-related changes including an upload-artifact action bump and multiple tox-lsr version updates aimed at fixing and improving tests	CHANGELOG.md

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[sourcery-ai]

Hey - I've found 1 issue

Prompt for AI Agents

Please address the comments from this code review:

## Individual Comments

### Comment 1
<location path="CHANGELOG.md" line_range="9" />
<code_context>
+
+### New Features
+
+- feat: Added support for debian 13 [WIP] (#598)
+
+### Other Changes
</code_context>
<issue_to_address>
**suggestion (typo):** Consider capitalizing "Debian" as a proper noun.

Since this is plain English in the release notes, please update this to "Debian 13" for clarity and consistency.

```suggestion
- feat: Added support for Debian 13 [WIP] (#598)
```
</issue_to_address>

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[sourcery-ai]

suggestion (typo): Consider capitalizing "Debian" as a proper noun.

Since this is plain English in the release notes, please update this to "Debian 13" for clarity and consistency.

Suggested change

	- feat: Added support for debian 13 [WIP] (#598)
	- feat: Added support for Debian 13 [WIP] (#598)