Bump com.sun.xml.bind:jaxb-xjc from 2.1.7 to 2.3.9

Bumps com.sun.xml.bind:jaxb-xjc from 2.1.7 to 2.3.9.

---
updated-dependencies:
- dependency-name: com.sun.xml.bind:jaxb-xjc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -94,7 +94,7 @@ dependencies {
 	annotationProcessor 'org.projectlombok:lombok'
 
 	compile(files(genJaxb.downloadQueueClassesDir, genJaxb.attachmentDataStreamedClassessDir).builtBy(genJaxb))
-	jaxb 'com.sun.xml.bind:jaxb-xjc:2.1.7'
+	jaxb 'com.sun.xml.bind:jaxb-xjc:2.3.9'
 
 	testImplementation('org.springframework.boot:spring-boot-starter-test') {
 		exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'