Bump projectreactor.version from 3.4.7 to 3.4.8
Bump projectreactor.version from 3.4.7 to 3.4.8

Bumps `projectreactor.version` from 3.4.7 to 3.4.8.

Updates `reactor-core` from 3.4.7 to 3.4.8
- [Release notes](https://github.com/reactor/reactor-core/releases)
- [Commits](https://github.com/reactor/reactor-core/compare/v3.4.7...v3.4.8)

Updates `reactor-test` from 3.4.7 to 3.4.8
- [Release notes](https://github.com/reactor/reactor-core/releases)
- [Commits](https://github.com/reactor/reactor-core/compare/v3.4.7...v3.4.8)

---
updated-dependencies:
- dependency-name: io.projectreactor:reactor-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.projectreactor:reactor-test
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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