Bump testng from 7.3.0 to 7.5.1

Bumps [testng](https://github.com/cbeust/testng) from 7.3.0 to 7.5.1.
- [Release notes](https://github.com/cbeust/testng/releases)
- [Changelog](https://github.com/testng-team/testng/blob/master/CHANGES.txt)
- [Commits](testng-team/testng@7.3.0...7.5.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -84,7 +84,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <testng.version>7.3.0</testng.version>
+        <testng.version>7.5.1</testng.version>
         <mockito.version>3.5.7</mockito.version>
         <protea.http.version>[0.2,)</protea.http.version>
         <jackson.jaxrs.json.provider.version>2.11.2</jackson.jaxrs.json.provider.version>