[BUG] Custom serializer with custom ioRegistry isn't MessageSerializer because of shadow

[makselivanov]

Describe the bug

• Have you validated that this is not currently reported in
  SQL Support and Limitations?

Steps to Reproduce

• Is the JDBC Driver being used in a BI tool?

1. I use 1.1.0 version of driver
2. I use SQL variant (I think it is problem for every language)
3. I connect to Janusgraph server, so I need `ioRegistry` be `JanusGraphIoRegistry`
4. I use gremlin version 3.5.3 in Janusgraph, so I change files in driver, so its compile with this version of gremlin (I also change some import because of it).  
5. 
openjdk version "1.8.0_342"
OpenJDK Runtime Environment (build 1.8.0_342-8u342-b07-0ubuntu1~20.04-b07)
OpenJDK 64-Bit Server VM (build 25.342-b07, mixed mode)

Link to stackoverflow with example code

Problematic code is locate in GremlinConnectionProperties.java (used in GremlinQueryExecutor.java), when driver checks serializer is Object. Because JanusGraphIoRegistry isn't located in shadow, i need import org.apache.tinkerpop.gremlin.driver.MessageSerializer in my script. But because of it, instanceof return false, when we check for MessageSerializer, beсause MessageSerializer in driver is located in shadow.org.apache.tinkerpop.gremlin.driver.MessageSerializer

Expected behavior

I want to be able to add custom serializers with custom ioRegistry

Screenshots

Environment

• OS: Ubuntu 20.04

Additional Context

I suggest remove in root build.gradle line with relocate 'org.apache.tinkerpop', 'shadow.org.apache.tinkerpop', so that you can easily add custom serializers