Fix command to use newer changelog version

[XxdpavelxX]

Fix for the following error.
error:

Checking for existing branch release/7.58.0-Changelog
Creating new branch release/7.58.0-Changelog
Switched to a new branch 'release/7.58.0-Changelog'
Branch release/7.58.0-Changelog ready
Generating changelog for mobile via npx @metamask/auto-changelog@4.1.0..
npm warn exec The following package was not found and will be installed: @metamask/auto-changelog@4.1.0
Error: Unrecognized line: '* fix: address feature flag config issue'
    at parseChangelog (/home/runner/.npm/_npx/6cfb3df63ccce84f/node_modules/@metamask/auto-changelog/dist/parse-changelog.js:147:19)
    at updateChangelog (/home/runner/.npm/_npx/6cfb3df63ccce84f/node_modules/@metamask/auto-changelog/dist/update-changelog.js:107:60)
    at update (/home/runner/.npm/_npx/6cfb3df63ccce84f/node_modules/@metamask/auto-changelog/dist/cli.js:91:78)
    at async main (/home/runner/.npm/_npx/6cfb3df63ccce84f/node_modules/@metamask/auto-changelog/dist/cli.js:368:9)
Error: Process completed with exit code 1.

---

Note

Updates the mobile changelog generation echo to reference yarn auto-changelog instead of npx.

^{Written by Cursor Bugbot for commit 8c9c0dd. This will update automatically on new commits. Configure here.}

[cursor]

Bug: Changelog Script Uses Outdated Command

The script logs that it's generating the mobile changelog via yarn auto-changelog, but the actual command executed still uses npx @metamask/auto-changelog@4.1.0. This inconsistency means the intended fix for the problematic npx command was not fully applied, and the original error will likely persist.