Bump jackson-databind from 2.12.6 to 2.12.7.1 in /demo/sample-greeting

Bumps [jackson-databind](https://github.com/FasterXML/jackson) from 2.12.6 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]>

demo/sample-greeting/pom.xml

@@ -20,7 +20,7 @@
     <log4j2.version>2.17.2</log4j2.version>
     <citrus.version>3.2.1</citrus.version>
     <jetty.version>9.4.44.v20210927</jetty.version>
-    <jackson.version>2.12.6</jackson.version>
+    <jackson.version>2.12.7.1</jackson.version>
     <jaxb.version>2.3.5</jaxb.version>
     <jakarta.xml.bind-api.version>2.3.3</jakarta.xml.bind-api.version>
     <server.port>18001</server.port>