v2.43.1 dot release docs

[amyblais]

@claude Please help prepare docs for Mobile v2.43.1 dot release.

Here are the files to update:

https://github.com/mattermost/docs/blob/master/source/product-overview/mobile-app-changelog.md
https://github.com/mattermost/docs/blob/master/source/product-overview/mattermost-mobile-releases.md

[claude]

Claude finished @amyblais's task in 1m 34s —— View job • claude/issue-9143-20260814-0807 • Create PR ➔

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Mobile v2.43.1 dot release docs

• Gather context (repo guidelines, existing changelog/release files)
• Review prior dot release patterns (v2.42.1 / v2.42.2 / v2.42.3)
• Update source/product-overview/mobile-app-changelog.md
• Update source/product-overview/mattermost-mobile-releases.md
• Commit and push changes

What changed

source/product-overview/mobile-app-changelog.md

• Added a new (release-v2-43-1)= section above the 2.43.0 entry, following the existing dot release format (Release Date, Server Versions Supported, Compatibility, Bug Fixes, Known Issues).
• Compatibility, server version support (v11.7.0+), and Known Issues carried over from 2.43.0.

source/product-overview/mattermost-mobile-releases.md

• Updated the v2.43 row in Latest releases to point at v2.43.1: FEATURE ref, Download link, Changelog ref, and SBOM download URL.
• Left Released: 2026-08-14 / Support Ends: 2026-09-15 and the compatible server versions unchanged, matching how prior dot releases (e.g. v2.42.3) keep the original feature release dates.

⚠️ Needs your input

I don't have network access in this environment, so I couldn't pull the actual v2.43.1 release notes from the mattermost-mobile releases page. Two things need to be filled in before merge:

1. Bug Fixes — currently a - TBD placeholder in the 2.43.1 changelog section.
2. Release Date — I used August 14, 2026 (today's date, same as 2.43.0). Please correct if the dot release ships on a different day.

• Branch: claude/issue-9143-20260814-0807