Update ion-java from 1.11.10 to 1.11.11

Author: cowtowncoder

ion/pom.xml

@@ -38,7 +38,7 @@ tree model)
     <dependency>
       <groupId>com.amazon.ion</groupId>
       <artifactId>ion-java</artifactId>
-      <version>1.11.10</version>
+      <version>1.11.11</version>
     </dependency>
 
     <!-- Extends Jackson core, databind -->

release-notes/VERSION-2.x

@@ -16,7 +16,8 @@ Active maintainers:
 
 2.21.0 (not yet released)
 
-No changes since 2.20
+#xxx: (ion) Upgrade `ion-java` dep to 1.11.11 (from 1.11.10)
+ (requested by @Shaurya0108)
 
 2.20.1 (not yet released)