NCL-9918 Bump undertow to v2.3.26.Final

Author: patrikk0123

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>2.3.24.Final</undertowVersion>
+    <undertowVersion>2.3.26.Final</undertowVersion>
     <quarkus.version>3.6.9</quarkus.version>
   </properties>