Bump mpdf/mpdf from 8.2.2 to 8.2.4 (#2647)

* Bump mpdf/mpdf from 8.2.2 to 8.2.4

Bumps [mpdf/mpdf](https://github.com/mpdf/mpdf) from 8.2.2 to 8.2.4.
- [Release notes](https://github.com/mpdf/mpdf/releases)
- [Changelog](https://github.com/mpdf/mpdf/blob/development/CHANGELOG.md)
- [Commits](mpdf/mpdf@v8.2.2...v8.2.4)

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

Signed-off-by: dependabot[bot] <support@github.com>

* Updated changelog

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Progi1984 <progi1984@gmail.com>

Author: dependabot[bot]

composer.lock

@@ -32,5 +32,6 @@
 - Improved Issue Template by [@Progi1984](https://github.com/Progi1984) in [#2609](https://github.com/PHPOffice/PHPWord/pull/2609)
 - Bump phpoffice/math from 0.1.0 to 0.2.0 by [@Progi1984](https://github.com/Progi1984) fixing [#2559](https://github.com/PHPOffice/PHPWord/issues/2559) in [#2645](https://github.com/PHPOffice/PHPWord/pull/2645)
 - Bump tecnickcom/tcpdf from 6.6.5 to 6.7.5 by [@dependabot](https://github.com/dependabot) in [#2646](https://github.com/PHPOffice/PHPWord/pull/2646)
+- Bump mpdf/mpdf from 8.2.2 to 8.2.4 by [@dependabot](https://github.com/dependabot) in [#2647](https://github.com/PHPOffice/PHPWord/pull/2647)
 
 ### BC Breaks