Bump mpdf/mpdf from 8.2.0 to 8.2.2

Bumps [mpdf/mpdf](https://github.com/mpdf/mpdf) from 8.2.0 to 8.2.2.
- [Release notes](https://github.com/mpdf/mpdf/releases)
- [Changelog](https://github.com/mpdf/mpdf/blob/development/CHANGELOG.md)
- [Commits](mpdf/mpdf@v8.2.0...v8.2.2)

---
updated-dependencies:
- dependency-name: mpdf/mpdf
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

composer.lock

@@ -12,5 +12,6 @@
 
 - Bump dompdf/dompdf from 2.0.3 to 2.0.4 by [@dependabot](https://github.com/dependabot) in [#2530](https://github.com/PHPOffice/PHPWord/pull/2530)
 - Bump phpunit/phpunit from 9.6.13 to 9.6.14 by [@dependabot](https://github.com/dependabot) in [#2519](https://github.com/PHPOffice/PHPWord/pull/2519)
+- Bump mpdf/mpdf from 8.2.0 to 8.2.2 by [@dependabot](https://github.com/dependabot) in [#2518](https://github.com/PHPOffice/PHPWord/pull/2518)
 
 ### BC Breaks