HV-1743 Upgrade maven-compiler-plugin to 3.8.1

Author: gsmet

pom.xml

@@ -208,7 +208,7 @@
         <version.bundle.plugin>3.5.0</version.bundle.plugin>
         <version.checkstyle.plugin>3.0.0</version.checkstyle.plugin>
         <version.clean.plugin>3.0.0</version.clean.plugin>
-        <version.compiler.plugin>3.7.0</version.compiler.plugin>
+        <version.compiler.plugin>3.8.1</version.compiler.plugin>
         <version.copy.plugin>0.0.6</version.copy.plugin>
         <version.dependency.plugin>3.0.2</version.dependency.plugin>
         <version.depends.plugin>1.4.0</version.depends.plugin>