Bump undertow-core from 2.2.7.Final to 2.2.8.Final

Bumps [undertow-core](https://github.com/undertow-io/undertow) from 2.2.7.Final to 2.2.8.Final.
- [Release notes](https://github.com/undertow-io/undertow/releases)
- [Commits](undertow-io/undertow@2.2.7.Final...2.2.8.Final)

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

Author: dependabot[bot]

api/pom.xml

@@ -99,7 +99,7 @@
         <dependency>
             <groupId>io.undertow</groupId>
             <artifactId>undertow-core</artifactId>
-            <version>2.2.7.Final</version>
+            <version>2.2.8.Final</version>
         </dependency>
     </dependencies>
 </project>