Merge pull request #1030 from alphagov/dependabot/maven/jackson.version-2.12.0

Bump jackson.version from 2.11.3 to 2.12.0

Author: SandorArpa

pom.xml

@@ -11,7 +11,7 @@
         <mainClass>uk.gov.pay.ledger.app.LedgerApp</mainClass>
 
         <dropwizard.version>2.0.15</dropwizard.version>
-        <jackson.version>2.11.3</jackson.version>
+        <jackson.version>2.12.0</jackson.version>
         <testcontainers.version>1.15.0</testcontainers.version>
         <postgresql.version>42.2.18</postgresql.version>
         <pay-java-commons.version>1.0.20201125120106</pay-java-commons.version>