Revert "bump maven-compiler-plugin 3.8.1 -> 3.10.1"

This reverts commit 1e92de3.

Author: TheSnoozer

pom.xml

@@ -116,7 +116,7 @@
                 </plugin>
                 <plugin>
                     <artifactId>maven-compiler-plugin</artifactId>
-                    <version>3.10.1</version>
+                    <version>3.8.1</version>
                 </plugin>
                 <plugin>
                     <artifactId>maven-gpg-plugin</artifactId>