Unpin numpy

[Zethson]

Fixes #958

[emrekiciman]

@kbattocchi @amit-sharma any reason not to unpin numpy? all the checks pass. Thanks

[emrekiciman]

thanks @Zethson!

[amit-sharma]

I think there was an issue with numba before where it was only compatible with lower versions of numpy. That is probably fixed now. @kbattocchi am I correct?

[kbattocchi]

@amit-sharma: that's possible; as I recall there was an issue with numba that prevented us from supporting python 3.11 at one point on the econml side, but it looks like dowhy is limited to python<3.11 anyway. In general numpy releases have not posed backwards compatibility issues for econml so we have not added a constraint to a specific version.

[emrekiciman]

All right. given your comments, @amit-sharma @kbattocchi and the passing checks, I'm going to go ahead and merge this in then!

[emrekiciman]

lgtm (see conversation on this PR, with @amit-sharma and @kbattocchi on original reasons for pinning numpy)

[emrekiciman]

@all-contributors please add @Zethson for code

[allcontributors]

@emrekiciman

I've put up a pull request to add @Zethson! 🎉