fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321964
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321966
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321969
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321970

Author: snyk-bot

requirements.txt

@@ -2,7 +2,7 @@ black
 luigi
 # One of the requirements pulls in librosa, I believe note_seq
 # So we need to pin these, otherwise librosa breaks
-numpy==1.19.2
+numpy==1.22.2
 numba==0.48
 pandas
 pre-commit