⬆️ Bump numpy from 1.20.1 to 1.22.0 in /locust

Bumps [numpy](https://github.com/numpy/numpy) from 1.20.1 to 1.22.0.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/HOWTO_RELEASE.rst)
- [Commits](numpy/numpy@v1.20.1...v1.22.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

locust/requirements.txt

@@ -14,7 +14,7 @@ joblib==1.0.1
 locust==1.4.3
 MarkupSafe==1.1.1
 msgpack==1.0.2
-numpy==1.20.1
+numpy==1.22.0
 pandas==1.2.3
 psutil==5.8.0
 python-dateutil==2.8.1