Bump numpy from 1.16.4 to 1.22.0 in /old_repo_ensemble_strategy

Bumps [numpy](https://github.com/numpy/numpy) from 1.16.4 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](numpy/numpy@v1.16.4...v1.22.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

old_repo_ensemble_strategy/requirements.txt

@@ -1,5 +1,5 @@
 # Model Building Requirements
-numpy==1.16.4
+numpy==1.22.0
 pandas==1.0.3
 stockstats
 scikit-learn==0.21.0