add mockito version to parent pom

Author: JoeWang1127

gapic-generator-java-pom-parent/pom.xml

@@ -38,6 +38,7 @@
     <j2objc-annotations.version>3.0.0</j2objc-annotations.version>
     <threetenbp.version>1.7.0</threetenbp.version>
     <junit.version>5.11.4</junit.version>
+    <mockito.version>4.11.0</mockito.version>
     <slf4j.version>2.0.16</slf4j.version>
   </properties>
 

gax-java/pom.xml

@@ -163,7 +163,7 @@
       <dependency>
         <groupId>org.mockito</groupId>
         <artifactId>mockito-bom</artifactId>
-        <version>4.11.0</version>
+        <version>${mockito.version}</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>

java-sdk-logging/pom.xml

@@ -17,10 +17,6 @@
     <module>logback-extension</module>
   </modules>
 
-  <properties>
-    <mockito.version>4.11.0</mockito.version>
-  </properties>
-
   <dependencyManagement>
     <dependencies>
       <dependency>