Bump io.github.java-diff-utils:java-diff-utils from 4.12 to 4.15

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:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

tycho-artifactcomparator/pom.xml

@@ -75,7 +75,7 @@
 		<dependency>
 			<groupId>io.github.java-diff-utils</groupId>
 			<artifactId>java-diff-utils</artifactId>
-			<version>4.12</version>
+			<version>4.15</version>
 		</dependency>
 		<dependency>
 		    <groupId>ch.digitalfondue.jfiveparse</groupId>