pom: add reproducable build plugin

The previous attempt at this was running the
reproducable-build-maven-plugin after jarsigning, which results in the
jar not verifying correctly.

pom.xml

@@ -226,6 +226,20 @@
 					<includeTestSourceDirectory>true</includeTestSourceDirectory>
 				</configuration>
 			</plugin>
+			<plugin>
+				<groupId>io.github.zlika</groupId>
+				<artifactId>reproducible-build-maven-plugin</artifactId>
+				<version>0.7</version>
+				<executions>
+					<execution>
+						<!-- Move from pre-integration-test to place before jarsigning -->
+						<phase>package</phase>
+						<goals>
+							<goal>strip-jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
 		</plugins>
 		<pluginManagement>
 			<plugins>