Upgrade Jackson (#454)

Author: rgoers

flume-parent/pom.xml

@@ -237,8 +237,8 @@
     <curator.version>5.9.0</curator.version>
     <derby.version>10.17.1.0</derby.version>
     <jackson-annotations.version>2.19.0</jackson-annotations.version>
-    <fasterxml.jackson.version>2.19.0</fasterxml.jackson.version>
-    <fasterxml.jackson.databind.version>2.19.0</fasterxml.jackson.databind.version>
+    <fasterxml.jackson.version>2.21.1</fasterxml.jackson.version>
+    <fasterxml.jackson.databind.version>2.21.1</fasterxml.jackson.databind.version>
     <fest-reflect.version>1.4.1</fest-reflect.version>
     <gson.version>2.14.0</gson.version>
     <guava.version>33.4.8-jre</guava.version>