Bump org.testng:testng from 6.13.1 to 7.5.1 in /pulsar-io/netty

Bumps [org.testng:testng](https://github.com/cbeust/testng) from 6.13.1 to 7.5.1.
- [Release notes](https://github.com/cbeust/testng/releases)
- [Changelog](https://github.com/testng-team/testng/blob/master/CHANGES.txt)
- [Commits](https://github.com/cbeust/testng/compare/6.13.1...7.5.1)

---
updated-dependencies:
- dependency-name: org.testng:testng
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
1 file changed
tree: 1f114d49f288be6986157a22cfedbbe183e0348c
  1. .github/
  2. pulsar-io/
  3. .gitignore
  4. pom.xml