Bump jackson-databind from 2.9.9 to 2.12.6.1

Bumps [jackson-databind](https://github.com/FasterXML/jackson) from 2.9.9 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]

pom.xml

@@ -38,7 +38,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <httpcomponents.version>4.5.2</httpcomponents.version>
         <guava.version>19.0</guava.version>
-        <jackson.version>2.9.9</jackson.version>
+        <jackson.version>2.12.6.1</jackson.version>
         <junit.version>4.12</junit.version>
         <mockito.version>1.10.19</mockito.version>
     </properties>