Bump org.testng:testng from 7.7.1 to 7.9.0

Bumps [org.testng:testng](https://github.com/testng-team/testng) from 7.7.1 to 7.9.0.
- [Release notes](https://github.com/testng-team/testng/releases)
- [Changelog](https://github.com/testng-team/testng/blob/master/CHANGES.txt)
- [Commits](testng-team/testng@7.7.1...7.9.0)

---
updated-dependencies:
- dependency-name: org.testng:testng
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

bom/build.gradle

@@ -97,7 +97,7 @@ ext {
     springsecurityVersion = '6.0.3'
     springsecurityJwtVersion = '1.1.1.RELEASE'
     swaggerVersion = '2.2.9'
-    testngVersion = '7.7.1'
+    testngVersion = '7.9.0'
     thriftVersion = '0.18.1'
     springwebVersion = '6.0.6'
     tinkVersion = '1.9.0'