Bump numpy from 1.19.5 to 1.22.0 in /WebApp

Bumps [numpy](https://github.com/numpy/numpy) from 1.19.5 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@v1.19.5...v1.22.0)

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

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

Author: dependabot[bot]

WebApp/requirements.txt

@@ -20,7 +20,7 @@ keras-nightly==2.5.0.dev2021032900
 Keras-Preprocessing==1.1.2
 Markdown==3.3.4
 MarkupSafe==2.0.1
-numpy==1.19.5
+numpy==1.22.0
 oauthlib==3.2.2
 opt-einsum==3.3.0
 pandas==1.3.0