- Updates dem-stitcher to 2.5.8 to ensure new (ARIA-managed) url for reading the Geoid EGM 2008. See this issue.
- Ensure version/docker build use python 3 as done here: https://github.com/dbekaert/RAiDER/blob/32697d2e4e6908b8feb3b81a1df30cb5f4e49a24/.github/workflows/build.yml#L16-L17