Bump requests from 2.24.0 to 2.33.0 in /showcase

Bumps [requests](https://github.com/psf/requests) from 2.24.0 to 2.33.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.24.0...v2.33.0)

---
updated-dependencies:
- dependency-name: requests
  dependency-version: 2.33.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

showcase/requirements.txt

@@ -4,6 +4,6 @@ shapely==1.7.1
 pandas==1.1.2
 geopandas==0.8.1
 numpy==1.19.5
-requests==2.24.0
+requests==2.33.0
 matplotlib==3.3.2
 folium==0.11.0