Revert "Upgrade to Jackson 2.8.11"

This reverts commit f91f8f7.

See gh-11475

Author: wilkinsona

spring-boot-dependencies/pom.xml

@@ -96,7 +96,7 @@
 		<httpclient.version>4.5.4</httpclient.version>
 		<httpcore.version>4.4.8</httpcore.version>
 		<infinispan.version>8.2.8.Final</infinispan.version>
-		<jackson.version>2.8.11</jackson.version>
+		<jackson.version>2.8.10</jackson.version>
 		<janino.version>2.7.8</janino.version>
 		<javassist.version>3.21.0-GA</javassist.version> <!-- Same as Hibernate -->
 		<javax-cache.version>1.0.0</javax-cache.version>