Mobile v2.39 docs

[amyblais]

@claude Please help prepare docs for Mobile v2.39 (April 16th) 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
Here is an example PR: #8584

[claude]

Claude finished @amyblais's task in 3m 23s —— View job • claude/issue-8818-20260316-1147 • Create PR ➔

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Preparing Mobile v2.39 Docs

• Gather context and understand the request
• Read existing mobile-app-changelog.md and mattermost-mobile-releases.md files
• Update mobile-app-changelog.md with v2.39.0 entry
• Update mattermost-mobile-releases.md with v2.39 entry
• Commit and push changes

Changes made

mobile-app-changelog.md — Added a new 2.39.0 Release section at the top with:

• Release date: April 16, 2026
• Compatibility section (same server requirements as v2.38: Server v10.11.0+)
• Placeholder sections for Improvements, Bug Fixes, and Known Issues

mattermost-mobile-releases.md —

• Added v2.39 row to the Latest releases table (top row), compatible with v11.6, v11.5, v11.4, v10.11
• Removed v2.39 from the Future releases table