[JAVA-27511] upgrade spring mockito to boot 3 (#16127)

testing-modules/spring-mockito/pom.xml

@@ -11,9 +11,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-2</artifactId>
+        <artifactId>parent-boot-3</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-2</relativePath>
+        <relativePath>../../parent-boot-3</relativePath>
     </parent>
 
     <dependencies>
@@ -33,4 +33,8 @@
         </dependency>
     </dependencies>
 
+    <properties>
+        <start-class>com.baeldung.Main</start-class>
+    </properties>
+
 </project>