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] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -24,7 +24,7 @@
     <module.name>${project.groupId}.bootstrap5</module.name>
 
     <popper2-api.version>2.5.4-3</popper2-api.version>
-    <font-awesome-api.version>5.15.3-3</font-awesome-api.version>
+    <font-awesome-api.version>5.15.3-4</font-awesome-api.version>
     <plugin-util-api.version>2.4.0</plugin-util-api.version>
 
   </properties>