Bump jackson-databind from 2.9.6 to 2.12.6.1 in /samples

Bumps [jackson-databind](https://github.com/FasterXML/jackson) from 2.9.6 to 2.12.6.1.
- [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] <support@github.com>

Author: dependabot[bot]

samples/pom.xml

@@ -42,7 +42,7 @@
     <maven.compiler.target>1.8</maven.compiler.target>
     <hc4.client.version>4.5.13</hc4.client.version>
     <hc5.client.version>5.0.3</hc5.client.version>
-    <jackson.version>2.9.6</jackson.version>
+    <jackson.version>2.12.6.1</jackson.version>
     <asyncjson.version>0.2.0</asyncjson.version>
   </properties>