sync jackson versions

[luster]

there's an incompatibility within scala module and jackson-databind causing a runtime error

on a fresh install of gcs-proto-tools,

$ proto-tools tojson file.protobuf.avro

Exception in thread "main" java.lang.ExceptionInInitializerError
	at me.lyh.protobuf.generic.Schema$.fromJson(Schema.scala:43)
	at org.apache.avro.tool.ProtobufReader.<init>(ProtobufReader.scala:8)
	at org.apache.avro.tool.ProtoToJsonTool.run(ProtoToJsonTool.java:61)
	at org.apache.avro.tool.ProtoMain.run(ProtoMain.java:64)
	at org.apache.avro.tool.ProtoMain.main(ProtoMain.java:53)
Caused by: com.fasterxml.jackson.databind.JsonMappingException: Scala module 2.11.2 requires Jackson Databind version >= 2.11.0 and < 2.12.0
	at com.fasterxml.jackson.module.scala.JacksonModule.setupModule(JacksonModule.scala:61)
	at com.fasterxml.jackson.module.scala.JacksonModule.setupModule$(JacksonModule.scala:46)
	at com.fasterxml.jackson.module.scala.DefaultScalaModule.setupModule(DefaultScalaModule.scala:17)
	at com.fasterxml.jackson.databind.ObjectMapper.registerModule(ObjectMapper.java:835)
	at me.lyh.protobuf.generic.SchemaMapper$.<clinit>(Schema.scala:127)
	... 5 more

on main branch, i get the same runtime error when running sbt assembly and invoking directly from the jar, as below.

when making the proposed change to build.sbt locally, i was able to run the following successfully:

$ sbt clean assembly
$ java -jar proto-tools/target/scala-2.13/proto-tools-3.22.2.jar tojson file.protobuf.avro

while investigating these changes, i noticed that there are some wider incompatibilities between scala versions across the various dependencies. i'm not a scala/sbt expert, but it seems strange that we declare a scala module version but then revert down to a lower version because of a dependency we pull in. not sure what the longer term change would be in managing this project, but just wanted to call out

[RustedBones]

instead of pinning jackson-databind on the jackson-module-scala, we should make sure all jackson libs are in sync (and on the latest if possible)