Updated changelog

Author: Progi1984

docs/changes/2.x/2.0.0.md

@@ -30,5 +30,6 @@
 - Allow rgb() when converting Html by [@oleibman](https://github.com/oleibman) fixing [#2508](https://github.com/PHPOffice/PHPWord/issues/2508) in [#2512](https://github.com/PHPOffice/PHPWord/pull/2512)
 - 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)
 
 ### BC Breaks