Bump camel.version from 3.20.6 to 3.21.0 (PlaytikaOSS#1372)

Bumps `camel.version` from 3.20.6 to 3.21.0.

Updates `camel-bom` from 3.20.6 to 3.21.0

Updates `camel-spring-boot-starter` from 3.20.6 to 3.21.0

---
updated-dependencies:
- dependency-name: org.apache.camel:camel-bom
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.camel.springboot:camel-spring-boot-starter
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

embedded-kafka/pom.xml

@@ -14,7 +14,7 @@
     <artifactId>embedded-kafka</artifactId>
 
     <properties>
-        <camel.version>3.20.6</camel.version>
+        <camel.version>3.21.0</camel.version>
         <!-- https://spring.io/projects/spring-kafka#kafka-client-compatibility Confluent Platform 6.2 provides Kafka 2.8 -->
         <kafka-clients.version>3.5.0</kafka-clients.version>
         <maven-clean-plugin.version>3.3.1</maven-clean-plugin.version>