Bump io.github.java-diff-utils:java-diff-utils from 4.12 to 4.15 (#1000)

Bumps [io.github.java-diff-utils:java-diff-utils](https://github.com/java-diff-utils/java-diff-utils) from 4.12 to 4.15.
- [Release notes](https://github.com/java-diff-utils/java-diff-utils/releases)
- [Changelog](https://github.com/java-diff-utils/java-diff-utils/blob/master/CHANGELOG.md)
- [Commits](java-diff-utils/java-diff-utils@java-diff-utils-parent-4.12...java-diff-utils-parent-4.15)

---
updated-dependencies:
- dependency-name: io.github.java-diff-utils:java-diff-utils
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -141,7 +141,7 @@
 				<!-- text diffs -->
 				<groupId>io.github.java-diff-utils</groupId>
 				<artifactId>java-diff-utils</artifactId>
-				<version>4.12</version>
+				<version>4.15</version>
 			</dependency>
 
 			<dependency>