Bump testng from 7.1.0 to 7.5.1

Bumps [testng](https://github.com/cbeust/testng) from 7.1.0 to 7.5.1.
- [Release notes](https://github.com/cbeust/testng/releases)
- [Changelog](https://github.com/testng-team/testng/blob/master/CHANGES.txt)
- [Commits](https://github.com/cbeust/testng/commits/7.5.1)

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

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

pom.xml

@@ -29,7 +29,7 @@
         <wiremock-jre8.version>2.26.3</wiremock-jre8.version>
         <apiguardian-api.version>1.1.0</apiguardian-api.version>
         <junit4.version>4.13.1</junit4.version>
-        <testng.version>7.1.0</testng.version>
+        <testng.version>7.5.1</testng.version>
         <unirest-java.version>3.4.00</unirest-java.version>
         <junit-platform-engine.version>1.6.2</junit-platform-engine.version>
         <logback.version>1.2.9</logback.version>