[composer] Bump yahnis-elsts/plugin-update-checker from 5.6 to 5.7 in the composer-dependencies group across 1 directory

[dependabot]

Bumps the composer-dependencies group with 1 update in the / directory: yahnis-elsts/plugin-update-checker.

Updates yahnis-elsts/plugin-update-checker from 5.6 to 5.7

Release notes

Sourced from yahnis-elsts/plugin-update-checker's releases.

5.7

• Added optional support for the "autoupdate" field that allows triggering unattended plugin updates. To enable it, you need to both set autoupdate to true in plugin update metadata and call $updateChceker->allowAutoupdateField() in your plugin. Props to @​hisman for part of the implementation.
• BitBucket: Added support for basic auth with API tokens. Props to @​cristianozanca for part of the implementation.
• BitBucket: Removed OAuth 1 support since it's no longer supported by BitBucket.
• Replaced all htmlentities() calls with esc_html(). This takes advantage of automatic character set detection in WP core, and should eliminate some static analysis warnings. See #597.
• Replaced all wp_redirect() calls with wp_safe_redirect(). This shouldn't matter in practice since PUC only ever does internal redirects, but it pacifies some static analysis tools. See #597.
• Added and updated translations:
  • Persian (@​aljvdi)
  • Simplified Chinese (zh_CN, @​seatonjiang)
  • Traditional Chinese (zh_TW, @​alexclassroom)

Commits

• 275a96a Bump version number to 5.7
• 8b2396f Minor: Update year in the license block
• 299a869 Minor: Update docs for BitBucket auth
• c31b762 Remove OAuth 1 support for the BitBucket integration.
• eceb677 BitBucket support: Support basic auth with API tokens.
• 3ceae95 Don't allow autoupdate = true unless you call $checked->allowAutoupdateField(...
• b0acf15 Minor: Typo
• 9c044de Update README with regex filtering for GitHub release assets
• 68a70bf Merge pull request #602 from hisman/add-autoupdate-field-to-plugininfo
• 36f3c2b Add default value to the autoupdate field
• Additional commits viewable in compare view