Bump undertowVersion from 2.3.26.Final to 2.3.27.Final

Bumps `undertowVersion` from 2.3.26.Final to 2.3.27.Final.

Updates `io.undertow:undertow-core` from 2.3.26.Final to 2.3.27.Final
- [Release notes](https://github.com/undertow-io/undertow/releases)
- [Commits](undertow-io/undertow@2.3.26.Final...2.3.27.Final)

Updates `io.undertow:undertow-servlet` from 2.3.26.Final to 2.3.27.Final
- [Release notes](https://github.com/undertow-io/undertow/releases)
- [Commits](undertow-io/undertow@2.3.26.Final...2.3.27.Final)

---
updated-dependencies:
- dependency-name: io.undertow:undertow-core
  dependency-version: 2.3.27.Final
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.undertow:undertow-servlet
  dependency-version: 2.3.27.Final
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -43,7 +43,7 @@
     <projectEmail>https://github.com/Commonjava/http-testserver</projectEmail>
     <javaVersion>11</javaVersion>
     <maven.compiler.release>${javaVersion}</maven.compiler.release>
-    <undertowVersion>2.3.26.Final</undertowVersion>
+    <undertowVersion>2.3.27.Final</undertowVersion>
   </properties>
 
   <dependencyManagement>