Update Shapely to v2

[conbrad]

Describe the task Shapely v2 removes treating multipolygons as iterables, we need to reference those as .geoms

Acceptance Criteria

• [ ] https://github.com/bcgov/wps/pull/2456 builds and runs

Additional context

• https://shapely.readthedocs.io/en/latest/migration.html#migration