Bump com.webauthn4j:webauthn4j-core

Bumps [com.webauthn4j:webauthn4j-core](https://github.com/webauthn4j/webauthn4j) from 0.28.3.RELEASE to 0.28.4.RELEASE.
- [Release notes](https://github.com/webauthn4j/webauthn4j/releases)
- [Changelog](https://github.com/webauthn4j/webauthn4j/blob/master/github-release-notes-generator.yml)
- [Commits](webauthn4j/webauthn4j@0.28.3.RELEASE...0.28.4.RELEASE)

---
updated-dependencies:
- dependency-name: com.webauthn4j:webauthn4j-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -54,7 +54,7 @@
 
         <springdoc-openapi-starter-webmvc-ui.version>2.7.0</springdoc-openapi-starter-webmvc-ui.version>
         <logstash.version>8.0</logstash.version>
-        <webauthn4j.version>0.28.3.RELEASE</webauthn4j.version>
+        <webauthn4j.version>0.28.4.RELEASE</webauthn4j.version>
 
         <maven.deploy.skip>true</maven.deploy.skip>
     </properties>