Bump maven-changes-plugin from 2.8 to 2.12.1

Bumps maven-changes-plugin from 2.8 to 2.12.1.

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index 2eec638..4320536 100644
--- a/pom.xml
+++ b/pom.xml
@@ -364,7 +364,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-changes-plugin</artifactId>
-            <version>2.8</version>
+            <version>2.12.1</version>
             <configuration>
               <xmlPath>${basedir}/src/changes/changes.xml</xmlPath>
               <issueLinkTemplate>%URL%/%ISSUE%</issueLinkTemplate>