Upgrade maven-compiler-plugin 3.14.1 -> 3.15.0 (#2094)

See:
- https://github.com/apache/maven-compiler-plugin/releases/tag/maven-compiler-plugin-3.15.0
- apache/maven-compiler-plugin@maven-compiler-plugin-3.14.1...maven-compiler-plugin-3.15.0

Author: Picnic-DevPla-Bot

pom.xml

@@ -933,7 +933,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-compiler-plugin</artifactId>
-                    <version>3.14.1</version>
+                    <version>3.15.0</version>
                     <configuration>
                         <annotationProcessorPaths>
                             <path>