Bump jackson version (spotify#255)

Author: sterago

pom.xml

@@ -80,7 +80,7 @@
         <slf4j-api.version>1.7.36</slf4j-api.version>
         <mockito-core.version>5.6.0</mockito-core.version>
         <commons-io.version>2.6</commons-io.version>
-        <jackson.version>2.15.3</jackson.version>
+        <jackson.version>2.20.1</jackson.version>
         <immutables.version>2.9.3</immutables.version>
         <objenesis.version>3.3</objenesis.version>
         <opencensus.version>0.31.1</opencensus.version>