Bump version.camunda.dmn from 7.20.0 to 7.21.0

Bumps `version.camunda.dmn` from 7.20.0 to 7.21.0.

Updates `org.camunda.bpm.model:camunda-dmn-model` from 7.20.0 to 7.21.0

Updates `org.camunda.bpm.dmn:camunda-engine-dmn` from 7.20.0 to 7.21.0

---
updated-dependencies:
- dependency-name: org.camunda.bpm.model:camunda-dmn-model
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.camunda.bpm.dmn:camunda-engine-dmn
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -73,7 +73,7 @@
     <version.wildfly>27.0.1.Final</version.wildfly>
 
     <!-- camunda dependencies -->
-    <version.camunda.dmn>7.20.0</version.camunda.dmn>
+    <version.camunda.dmn>7.21.0</version.camunda.dmn>
 
     <!-- java ee dependencies -->
     <version.jakartaee-api>10.0.0</version.jakartaee-api>