Bump surge from 0.21.3 to 0.21.6
Bump surge from 0.21.3 to 0.21.6

Bumps [surge](https://github.com/sintaxi/surge) from 0.21.3 to 0.21.6.
- [Release notes](https://github.com/sintaxi/surge/releases)
- [Commits](https://github.com/sintaxi/surge/commits/v0.21.6)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
Robdel12/DropKick,Robdel12/DropKick