Bump testng from 7.6.1 to 7.7.0 in /driver-kop (openmessaging#366)

Bumps [testng](https://github.com/cbeust/testng) from 7.6.1 to 7.7.0.
- [Release notes](https://github.com/cbeust/testng/releases)
- [Changelog](https://github.com/cbeust/testng/blob/master/CHANGES.txt)
- [Commits](testng-team/testng@7.6.1...7.7.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

driver-kop/pom.xml

@@ -53,7 +53,7 @@
         <dependency>
             <groupId>org.testng</groupId>
             <artifactId>testng</artifactId>
-            <version>7.6.1</version>
+            <version>7.7.0</version>
             <scope>test</scope>
         </dependency>
     </dependencies>