Bump org.testng:testng from 7.5 to 7.5.1 in /examples

Bumps [org.testng:testng](https://github.com/cbeust/testng) from 7.5 to 7.5.1.
- [Release notes](https://github.com/cbeust/testng/releases)
- [Changelog](https://github.com/cbeust/testng/blob/master/CHANGES.txt)
- [Commits](testng-team/testng@7.5...7.5.1)

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

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

Author: dependabot[bot]

examples/redis-backed-cache-testng/build.gradle

@@ -13,7 +13,7 @@ dependencies {
     implementation 'com.google.guava:guava:23.0'
     testImplementation 'org.testcontainers:testcontainers'
     testImplementation 'ch.qos.logback:logback-classic:1.3.8'
-    testImplementation 'org.testng:testng:7.5'
+    testImplementation 'org.testng:testng:7.5.1'
     testImplementation 'org.assertj:assertj-core:3.24.2'
 }