fix(deps): update dependency yahnis-elsts/plugin-update-checker to v5.5

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
yahnis-elsts/plugin-update-checker	5.4 -> 5.5

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Release Notes

YahnisElsts/plugin-update-checker (yahnis-elsts/plugin-update-checker)

v5.5: 5.5

Compare Source

• Removed information about plugins and themes that manage updates via PUC from data that WordPress core sends to api.wordpress.org when it checks for updates. Props to @​DavidAnderson684 (#​578).
  • You can turn this off and restore the default WP behaviour by using the new remove_from_default_update_checks filter. Example:

    $updateChecker->addFilter('remove_from_default_update_checks', '__return_false');

• Improved handling of incorrect ZIP directory structure where plugin/theme files are at the root instead of in a subdirectory. The update checker will now attempt to automatically create a new subdirectory that matches the slug and move all the files into that subdirectory. Props to @​MehbubRashid (#​574).
• Improved Debug Bar integration: The "Check Now" and "Request Info" buttons in the "PUC (your-slug)" panel are now also visible in the site front end. Previously, they only showed up if you opened the Debug Bar while on an admin page.
• Added Greek translation (@​theo-gk).
• Updated Simplified Chinese translation (@​seatonjiang).

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