Bump pitest-maven from 1.6.3 to 1.6.4
Bump pitest-maven from 1.6.3 to 1.6.4

Bumps [pitest-maven](https://github.com/hcoles/pitest) from 1.6.3 to 1.6.4.
- [Release notes](https://github.com/hcoles/pitest/releases)
- [Commits](https://github.com/hcoles/pitest/compare/1.6.3...1.6.4)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
thomasleplus/SubChannel,thomasleplus/SubChannel