SLING-11973 - Updating to Johnzon 1.2.21 (#3)

Updating to Johnzon 1.2.21

Co-authored-by: Robert Munteanu <rombert@apache.org>
diff --git a/pom.xml b/pom.xml
index 38f445d..b0df949 100644
--- a/pom.xml
+++ b/pom.xml
@@ -84,7 +84,7 @@
         <dependency>
             <groupId>org.apache.johnzon</groupId>
             <artifactId>johnzon-core</artifactId>
-            <version>1.2.14</version>
+            <version>1.2.21</version>
             <scope>provided</scope>
         </dependency>
         <!-- OSGi annotations (OSGi R7) -->