Currently, the type lookup cache is shared by all interpreter which causes multiple issues:

* The version tag is currently protected by the GIL, but it would require a new lock if the GIL is made per interpreter (bpo-40512)

* Clearing the cache in an interpreter clears the cache in all interpreters

* The cache has a fixed size of 4096 entries. The cache misses increase with the number of interpreters, since each interpreter has its own types.

I propose to make the type lookup cache per interpreter.