Bump org.kordamp.ikonli:ikonli-materialdesign-pack from 11.3.5 to 12.3.1

Bumps [org.kordamp.ikonli:ikonli-materialdesign-pack](https://github.com/kordamp/ikonli) from 11.3.5 to 12.3.1.
- [Release notes](https://github.com/kordamp/ikonli/releases)
- [Changelog](https://github.com/kordamp/ikonli/blob/master/jreleaser.yml)
- [Commits](kordamp/ikonli@v11.3.5...v12.3.1)

---
updated-dependencies:
- dependency-name: org.kordamp.ikonli:ikonli-materialdesign-pack
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

pdxu-app/build.gradle

@@ -40,7 +40,7 @@ dependencies {
     implementation 'com.jfoenix:jfoenix:9.0.10'
 
     implementation group: 'org.kordamp.ikonli', name: 'ikonli-javafx', version: "11.3.5"
-    implementation group: 'org.kordamp.ikonli', name: 'ikonli-materialdesign-pack', version: "11.3.5"
+    implementation group: 'org.kordamp.ikonli', name: 'ikonli-materialdesign-pack', version: "12.3.1"
     implementation group: 'org.slf4j', name: 'slf4j-api', version: '2.0.13'
     implementation group: 'org.slf4j', name: 'slf4j-simple', version: '2.0.13'