Revert dependency version to match python 3.7

[atxy-blip]

Remaining warnings of pytest:

..\..\..\anaconda3\envs\reno\lib\site-packages\qutip\__init__.py:128
  ...\qutip\__init__.py:128: UserWarning: matplotlib not found: Graphics will not work.
    warnings.warn("matplotlib not found: Graphics will not work.")

renormalizer/mps/tests/test_mp.py::test_save_load
  ...\numpy\lib\npyio.py:719: VisibleDeprecationWarning: Creating an ndarray from ragged nested sequences (which is a list-or-tuple of lists-or-tuples-or ndarrays with different lengths or shapes) is deprecated. If you meant to do this, you must specify 'dtype=object' when creating the ndarray.
    val = np.asanyarray(val)

Tested on Windows 11 x86_64 with python=3.7, renormalizer=0.0.10.

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.03 :warning:

Comparison is base (d749393) 85.26% compared to head (0031bad) 85.24%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #151 +/- ## ========================================== - Coverage 85.26% 85.24% -0.03% ========================================== Files 105 105 Lines 9991 9991 ========================================== - Hits 8519 8517 -2 - Misses 1472 1474 +2 ``` | [Impacted Files](https://app.codecov.io/gh/shuaigroup/Renormalizer/pull/151?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=shuaigroup) | Coverage Δ | | |---|---|---| | [renormalizer/transport/tests/test\_kubo.py](https://app.codecov.io/gh/shuaigroup/Renormalizer/pull/151?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=shuaigroup#diff-cmVub3JtYWxpemVyL3RyYW5zcG9ydC90ZXN0cy90ZXN0X2t1Ym8ucHk=) | `98.97% <100.00%> (ø)` | | | [...rmalizer/transport/tests/test\_spectral\_function.py](https://app.codecov.io/gh/shuaigroup/Renormalizer/pull/151?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=shuaigroup#diff-cmVub3JtYWxpemVyL3RyYW5zcG9ydC90ZXN0cy90ZXN0X3NwZWN0cmFsX2Z1bmN0aW9uLnB5) | `97.56% <100.00%> (ø)` | | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/shuaigroup/Renormalizer/pull/151/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=shuaigroup)

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[liwt31]

Looks good to me, thanks!