Bump datadog from 0.33.0 to 0.50.2

Bumps [datadog](https://github.com/DataDog/datadogpy) from 0.33.0 to 0.50.2.
- [Release notes](https://github.com/DataDog/datadogpy/releases)
- [Changelog](https://github.com/DataDog/datadogpy/blob/master/CHANGELOG.md)
- [Commits](DataDog/datadogpy@v0.33.0...v0.50.2)

---
updated-dependencies:
- dependency-name: datadog
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -2,7 +2,7 @@ APScheduler==3.10.4
 GeoAlchemy @ https://github.com/hozn/GeoAlchemy/archive/0.7.3dev1.tar.gz
 PyMySQL==1.1.1
 colorlog==4.1.0
-datadog==0.33.0
+datadog==0.50.2
 envparse==0.2.0
 freezing-model @ https://github.com/freezingsaddles/freezing-model/archive/0.8.6.tar.gz
 greenstalk==1.0.1