Bump jackson-databind in /microservices/iot_sensor

Bumps [jackson-databind](https://github.com/FasterXML/jackson) from 2.9.8 to 2.12.7.1.
- [Release notes](https://github.com/FasterXML/jackson/releases)
- [Commits](https://github.com/FasterXML/jackson/commits)

---
updated-dependencies:
- dependency-name: com.fasterxml.jackson.core:jackson-databind
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

microservices/iot_sensor/pom.xml

@@ -17,7 +17,7 @@
     <properties>
         <java.version>1.8</java.version>
         <eclipse-paho-mqtt.version>1.2.0</eclipse-paho-mqtt.version>
-        <jackson-bind.version>2.9.8</jackson-bind.version>
+        <jackson-bind.version>2.12.7.1</jackson-bind.version>
     </properties>
 
     <dependencies>