Add compiler versions for maven.

Author: wu-sheng

pom.xml

@@ -78,12 +78,15 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.release>8</maven.compiler.release>
         <compiler.version>8</compiler.version>
         <checkstyle.version>6.18</checkstyle.version>
         <junit.version>4.12</junit.version>
         <mockito-core.version>5.0.0</mockito-core.version>
         <system-stubs-junit4.version>2.0.2</system-stubs-junit4.version>
-        <lombok.version>1.18.30</lombok.version>
+        <lombok.version>1.18.38</lombok.version>
 
         <!-- core lib dependency -->
         <bytebuddy.version>1.17.6</bytebuddy.version>