Allow NumPy v1 in installation requirements

[BLKSerene]

Description

Similar to explosion/spacy-pkuseg#18, this PR updates the version pin to allow thinc to be used with NumPy v1 to ease compatibility issues with other 3rd-party packages requiring NumPy 1.x.

Types of change

Dependency change.

Checklist

• I confirm that I have the right to submit this contribution under the project's MIT license.
• I ran the tests, and all new and existing tests passed.
• My changes don't require a change to the documentation, or if they do, I've added all required information.

[BLKSerene]

Gentle ping, @honnibal.

[honnibal]

Thanks! Sorry I messed this up before.

[BLKSerene]

@honnibal, could you please release a new version to reflect this dependency change? It seems that the release of thinc 8.3.7 was not successful.

[honnibal]

Sorry about the delay on this, I didn't realise it didn't upload. We had problems with our PyPi account being at its storage limit which took some time to resolve. I then lost track of the status of this and thought it was all complete. A new version is up now.