build: bump undertow-servlet from 2.2.5.Final to 2.2.7.Final (#168)

Bumps [undertow-servlet](https://github.com/undertow-io/undertow) from 2.2.5.Final to 2.2.7.Final.
- [Release notes](https://github.com/undertow-io/undertow/releases)
- [Commits](undertow-io/undertow@2.2.5.Final...2.2.7.Final)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sergio del Amo <sergio.delamo@softamo.com>

http-server-undertow/build.gradle

@@ -5,7 +5,7 @@ dependencies {
     api project(":servlet-engine")
     api "io.micronaut:micronaut-http-server:$micronautVersion"
 
-    implementation 'io.undertow:undertow-servlet:2.2.5.Final'
+    implementation 'io.undertow:undertow-servlet:2.2.7.Final'
     testAnnotationProcessor "io.micronaut:micronaut-inject-java"
     testImplementation "io.micronaut:micronaut-inject-groovy"
     testImplementation "io.micronaut:micronaut-http-client"