Revert "3rdparty: jackson upgrade to 2.13.0"

Problem

2.13.0 introduced a regression, where they were double-serializing.  We're
worried that this will lead to a substantial performance regression. Github
ticket: FasterXML/jackson-databind#3308

Solution

This reverts commit e27353b784543196b9f5fd572110e4b4fe04f4c4.

JIRA Issues: CSL-11459

Differential Revision: https://phabricator.twitter.biz/D780287

Author: mosesn

CHANGELOG.rst

@@ -7,18 +7,11 @@ Note that ``PHAB_ID=#`` and ``RB_ID=#`` correspond to associated messages in com
 Unreleased
 ----------
 
-Breaking API Changes
-~~~~~~~~~~~~~~~~~~~~
-
-* util-jackson: The error message when failing to deserialize a character now correctly prints the non-character string. ``PHAB_ID=D744627``
-
 Runtime Behavior Changes
 ~~~~~~~~~~~~~~~~~~~~~~~~
 
 * util-cache: Update Caffeine cache library to version 2.9.2 ``PHAB_ID=D771893``
 
-* util: Bump version of Jackson to 2.13.0. ``PHAB_ID=D744627``
-
 21.10.0
 -------
 

build.sbt

@@ -7,7 +7,7 @@ Global / excludeLintKeys += scalacOptions // might be actually unused in util-do
 val releaseVersion = "21.11.0-SNAPSHOT"
 
 val slf4jVersion = "1.7.30"
-val jacksonVersion = "2.13.0"
+val jacksonVersion = "2.11.4"
 val mockitoVersion = "3.3.3"
 val mockitoScalaVersion = "1.14.8"
 

util-jackson/src/test/scala/com/twitter/util/jackson/ScalaObjectMapperTest.scala

@@ -823,7 +823,7 @@ class ScalaObjectMapperTest
         |}
       """.stripMargin,
       withErrors = Seq(
-        "c: '-1' is not a valid Character"
+        "c: '' is not a valid Character"
       )
     )
   }