Bump org.javamodularity.moduleplugin from 1.8.14 to 1.8.15

Bumps org.javamodularity.moduleplugin from 1.8.14 to 1.8.15.

---
updated-dependencies:
- dependency-name: org.javamodularity.moduleplugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

archunit-java-modules-test/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'archunit.java-conventions'
-    id 'org.javamodularity.moduleplugin' version '1.8.14'
+    id 'org.javamodularity.moduleplugin' version '1.8.15'
 }
 
 ext.moduleName = 'com.tngtech.archunit.javamodulestest'