Update changelog for 3.10.0 release

Author: acrobat

CHANGELOG-3.X.md

@@ -1,5 +1,17 @@
 # Changelog
 
+## 3.10.0
+
+### Added
+- Add vulnerability alerts endpoints ([andreia](https://github.com/andreia)) [#1096](https://github.com/KnpLabs/php-github-api/issues/1096)
+- Added environments ([Froxz](https://github.com/Froxz)) [#1103](https://github.com/KnpLabs/php-github-api/issues/1103)
+
+### Changed
+- Create authorization removed from docs ([rafasashi](https://github.com/rafasashi)) [#1090](https://github.com/KnpLabs/php-github-api/issues/1090)
+- Setup dependabot for github action workflows ([acrobat](https://github.com/acrobat)) [#1098](https://github.com/KnpLabs/php-github-api/issues/1098)
+- Bump actions/checkout from 2 to 3 ([dependabot](https://github.com/dependabot)[[bot](https://github.com/bot)]) [#1099](https://github.com/KnpLabs/php-github-api/issues/1099)
+- Bump ramsey/composer-install from 1 to 2 ([dependabot](https://github.com/dependabot)[[bot](https://github.com/bot)]) [#1100](https://github.com/KnpLabs/php-github-api/issues/1100)
+
 ## 3.9.0
 
 ### Added