Merge pull request #684 from apache/dependabot/maven/org.testng-testng-7.5.1

Bump testng from 7.5 to 7.5.1
diff --git a/pom.xml b/pom.xml
index 7cb8213..3390e9f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1091,7 +1091,7 @@
             <dependency>
                 <groupId>org.testng</groupId>
                 <artifactId>testng</artifactId>
-                <version>7.5</version><!-- the latest version supporting Java 1.8 -->
+                <version>7.5.1</version><!-- the latest version supporting Java 1.8 -->
             </dependency>
 
             <dependency>