chore(deps): update plugin com.github.bjornvester.xjc to v1.9.0 (open-telemetry#15418)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

settings.gradle.kts

@@ -6,7 +6,7 @@ pluginManagement {
     id("io.github.gradle-nexus.publish-plugin") version "2.0.0"
     id("org.jetbrains.kotlin.jvm") version "2.2.21"
     id("org.xbib.gradle.plugin.jflex") version "3.0.2"
-    id("com.github.bjornvester.xjc") version "1.8.2"
+    id("com.github.bjornvester.xjc") version "1.9.0"
     id("org.graalvm.buildtools.native") version "0.11.3"
     id("com.google.osdetector") version "1.7.3"
     id("com.google.protobuf") version "0.9.5"