Bump font-awesome-api from 5.15.3-3 to 5.15.3-4

Bumps [font-awesome-api](https://github.com/jenkinsci/font-awesome-api-plugin) from 5.15.3-3 to 5.15.3-4.
- [Release notes](https://github.com/jenkinsci/font-awesome-api-plugin/releases)
- [Changelog](https://github.com/jenkinsci/font-awesome-api-plugin/blob/master/CHANGELOG.md)
- [Commits](jenkinsci/font-awesome-api-plugin@v5.15.3-3...v5.15.3-4)

---
updated-dependencies:
- dependency-name: io.jenkins.plugins:font-awesome-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -27,7 +27,7 @@
     <plugin-util-api.version>2.3.0</plugin-util-api.version>
     <jquery3-api.version>3.6.0-1</jquery3-api.version>
     <bootstrap5-api.version>5.0.1-2</bootstrap5-api.version>
-    <fontawesome-api.version>5.15.3-3</fontawesome-api.version>
+    <fontawesome-api.version>5.15.3-4</fontawesome-api.version>
     <eclipse-collections.version>9.2.0</eclipse-collections.version>
 
   </properties>