Updated changelog

Author: Progi1984

docs/changes/0.2.0.md

@@ -11,4 +11,5 @@
 ## Miscellaneous
 
 - Github Action : Roave BC Check by [@Progi1984](https://github/Progi1984) in [#9](https://github.com/PHPOffice/Math/pull/9)
+- Bump actions/checkout from 2 to 4 by [@dependabot](https://github/dependabot) in [#10](https://github.com/PHPOffice/Math/pull/10)
 - Bump actions/setup-python from 2 to 4 by [@dependabot](https://github/dependabot) in [#11](https://github.com/PHPOffice/Math/pull/11)