Bump numpy from 1.21.1 to 1.21.2 (#381)

Bumps [numpy](https://github.com/numpy/numpy) from 1.21.1 to 1.21.2.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/HOWTO_RELEASE.rst.txt)
- [Commits](https://github.com/numpy/numpy/compare/v1.21.1...v1.21.2

)

---
updated-dependencies:
- dependency-name: numpy
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -8,7 +8,7 @@ futures
 fuzzywuzzy==0.18.0
 lxml==4.6.3
 matplotlib==2.2.5
-numpy==1.21.1
+numpy==1.21.2
 nltk==3.6.2
 Pillow>=3.4.1
 python-crfsuite==0.9.7