build(deps): bump netty.version from 4.1.54.Final to 4.1.55.Final
build(deps): bump netty.version from 4.1.54.Final to 4.1.55.Final

Bumps `netty.version` from 4.1.54.Final to 4.1.55.Final.

Updates `netty-buffer` from 4.1.54.Final to 4.1.55.Final
- [Release notes](https://github.com/netty/netty/releases)
- [Commits](https://github.com/netty/netty/compare/netty-4.1.54.Final...netty-4.1.55.Final)

Updates `netty-codec` from 4.1.54.Final to 4.1.55.Final
- [Release notes](https://github.com/netty/netty/releases)
- [Commits](https://github.com/netty/netty/compare/netty-4.1.54.Final...netty-4.1.55.Final)

Updates `netty-common` from 4.1.54.Final to 4.1.55.Final
- [Release notes](https://github.com/netty/netty/releases)
- [Commits](https://github.com/netty/netty/compare/netty-4.1.54.Final...netty-4.1.55.Final)

Updates `netty-handler` from 4.1.54.Final to 4.1.55.Final
- [Release notes](https://github.com/netty/netty/releases)
- [Commits](https://github.com/netty/netty/compare/netty-4.1.54.Final...netty-4.1.55.Final)

Updates `netty-transport` from 4.1.54.Final to 4.1.55.Final
- [Release notes](https://github.com/netty/netty/releases)
- [Commits](https://github.com/netty/netty/compare/netty-4.1.54.Final...netty-4.1.55.Final)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
killbill/killbill-oss-parent