Bump ecj from 3.30.0 to 3.31.0

Bumps [ecj](https://github.com/eclipse-jdt/eclipse.jdt.core) from 3.30.0 to 3.31.0.
- [Release notes](https://github.com/eclipse-jdt/eclipse.jdt.core/releases)
- [Commits](https://github.com/eclipse-jdt/eclipse.jdt.core/commits)

---
updated-dependencies:
- dependency-name: org.eclipse.jdt:ecj
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

plexus-compilers/plexus-compiler-eclipse/pom.xml

@@ -25,7 +25,7 @@
     <dependency>
       <groupId>org.eclipse.jdt</groupId>
       <artifactId>ecj</artifactId>
-      <version>3.30.0</version>
+      <version>3.31.0</version>
     </dependency>
     <dependency>
       <groupId>org.codehaus.plexus</groupId>