rasterstats dependency missing in pip install

[anton-seaice]

Describe the bug/issue When dea-tools is installed in pip, rasterstats is not installed but is needed for dea_tools/spatial.py

Steps to reproduce

1. pip install dea-tools in a clean environment
2. In python, attempt to "import dea_tools.spatial"
3. ModuleNotFoundError is returned

Expected behaviour Module loads without error.

Environment information pip install of dea-tools

[anton-seaice]

geopy module is also missing