Bump numpy from 1.20.2 to 1.22.0 (#5)

Bumps [numpy](https://github.com/numpy/numpy) from 1.20.2 to 1.22.0.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](https://github.com/numpy/numpy/compare/v1.20.2...v1.22.0)

---
updated-dependencies:
- dependency-name: numpy
  dependency-type: direct:production
...

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requirements.txt

@@ -19,7 +19,7 @@ librosa==0.8.0
 llvmlite==0.36.0
 matplotlib==3.4.1
 numba==0.53.1
-numpy==1.20.2
+numpy==1.22.0
 packaging==20.9
 pandas==1.2.4
 pathtools==0.1.2