Bump heroku-maven-plugin from 1.1.3 to 2.0.16
Bump heroku-maven-plugin from 1.1.3 to 2.0.16

Bumps [heroku-maven-plugin](https://github.com/heroku/heroku-maven-plugin) from 1.1.3 to 2.0.16.
- [Release notes](https://github.com/heroku/heroku-maven-plugin/releases)
- [Changelog](https://github.com/heroku/heroku-maven-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/heroku/heroku-maven-plugin/compare/heroku-sdk-parent-1.1.3...heroku-sdk-parent-2.0.16)

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