[PLAT-14536] Missing XmlElement dependency

Summary:
YBM ran into an error when the recent dependencies introduced for datadog validation changed. This diff fixes the case where `yb.cloud.enabled=true`.

Test Plan:
Manually compiled and ran platform with yb.cloud.enabled=true.
Manually tested the datadog API still works.

Reviewers: sneelakantan, sanketh, amalyshev

Reviewed By: sneelakantan

Subscribers: yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D36313

managed/build.sbt

@@ -231,6 +231,7 @@ libraryDependencies ++= Seq(
   "io.fabric8" % "kubernetes-model" % "6.8.0",
   "org.modelmapper" % "modelmapper" % "2.4.4",
   "com.datadoghq" % "datadog-api-client" % "2.25.0" classifier "shaded-jar",
+  "javax.xml.bind" % "jaxb-api" % "2.3.1",
   "io.jsonwebtoken" % "jjwt-api" % "0.11.5",
   "io.jsonwebtoken" % "jjwt-impl" % "0.11.5",
   "io.jsonwebtoken" % "jjwt-jackson" % "0.11.5",