[maven] Bump org.springframework.integration:spring-integration-mqtt

Bumps [org.springframework.integration:spring-integration-mqtt](/~https://github.com/spring-projects/spring-integration) from 6.3.1 to 6.3.2.
- [Release notes](/~https://github.com/spring-projects/spring-integration/releases)
- [Commits](spring-projects/spring-integration@v6.3.1...v6.3.2)

---
updated-dependencies:
- dependency-name: org.springframework.integration:spring-integration-mqtt
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

mqtt/pom.xml

@@ -43,7 +43,7 @@
     <maven.compiler.source>${java.sdk.version}</maven.compiler.source>
     <maven.compiler.target>${java.sdk.version}</maven.compiler.target>
     <project.build.sourceEncoding>${source.encoding}</project.build.sourceEncoding>
-    <spring.mqtt.version>6.3.1</spring.mqtt.version>
+    <spring.mqtt.version>6.3.2</spring.mqtt.version>
     <!-- sonar analysis -->
     <sonar.projectKey>${project.sonar.root.projectKey}-${project.groupId}-${project.artifactId}
     </sonar.projectKey>