chore(*): run ddev utility addon-update-checker, fix link check

[stasadev]

The Issue

$ ddev utility addon-update-checker
ERROR: Actions needed:
- commands/host/mongo-express should be executable, run 'chmod +x "commands/host/mongo-express"'
- .gitattributes should contain '.editorconfig', see upstream file https://github.com/ddev/ddev-addon-template/blob/main/.gitattributes
- .editorconfig is missing, see upstream file https://github.com/ddev/ddev-addon-template/blob/main/.editorconfig
Exit code: 1

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https://github.com/ddev/ddev-mongo/actions/runs/31707288724/job/94470929909

Issues :-(
> Links 
  1. [L003] 429 https://github.com/ddev/ddev-mongo/commits  

How This PR Solves The Issue

Fixes the issues.
Prepares changelog for release.

Manual Testing Instructions

ddev add-on get https://github.com/ddev/ddev-mongo/tarball/refs/pull/REPLACE_ME_WITH_THIS_PR_NUMBER/head
ddev restart

Automated Testing Overview

Release/Deployment Notes