Bump druid from 1.1.20 to 1.1.21
Bump druid from 1.1.20 to 1.1.21

Bumps [druid](https://github.com/alibaba/druid) from 1.1.20 to 1.1.21.
- [Release notes](https://github.com/alibaba/druid/releases)
- [Commits](https://github.com/alibaba/druid/compare/1.1.20...1.1.21)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
mybatis/guice,hazendaz/guice