Add Taylor Otwell to list of sponsors

Author: colinodell

README.md

@@ -174,6 +174,7 @@ We'd also like to extend our sincere thanks the following sponsors who support o
 
  - [Tidelift](https://tidelift.com/subscription/pkg/packagist-league-commonmark?utm_source=packagist-league-commonmark&utm_medium=referral&utm_campaign=readme) for offering support to both the maintainers and end-users through their [professional support](https://tidelift.com/subscription/pkg/packagist-league-commonmark?utm_source=packagist-league-commonmark&utm_medium=referral&utm_campaign=readme) program
  - [JetBrains](https://www.jetbrains.com/) for supporting this project with complimentary [PhpStorm](https://www.jetbrains.com/phpstorm/) licenses
+ - [Taylor Otwell](https://twitter.com/taylorotwell) for sponsoring this project through GitHub sponsors
 
 Are you interested in sponsoring development of this project? See <https://www.colinodell.com/sponsor> for a list of ways to contribute.