fix: update client version in JsonSchemaVersionsFallback (#38390)

Updated the client version from 1 to 2 in the JsonSchemaVersionsFallback class to align with the latest schema changes.
With introduction fo HTML column type in appsmith table, we don't want, apps exported from a newer version to be importable in the older version.

app/server/appsmith-server/src/main/java/com/appsmith/server/migrations/JsonSchemaVersionsFallback.java

@@ -5,7 +5,7 @@
 @Component
 public class JsonSchemaVersionsFallback {
     private static final Integer serverVersion = 11;
-    public static final Integer clientVersion = 1;
+    public static final Integer clientVersion = 2;
 
     public Integer getServerVersion() {
         return serverVersion;