dependabot: bump org.apache.camel:camel-xmlsecurity

Bumps org.apache.camel:camel-xmlsecurity from 3.14.2 to 3.21.0.

---
updated-dependencies:
- dependency-name: org.apache.camel:camel-xmlsecurity
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -511,7 +511,7 @@ dependencies {
     runtimeOnly 'jakarta.xml.bind:jakarta.xml.bind-api:4.0.0'
     runtimeOnly 'org.ow2.asm:asm:9.1'
 
-    testImplementation 'org.apache.camel:camel-xmlsecurity:3.14.2'
+    testImplementation 'org.apache.camel:camel-xmlsecurity:3.21.0'
 
     //OpenSAML
     implementation 'net.shibboleth.utilities:java-support:8.4.0'