Bump protobuf to ^6.31.1 (#139)

* Bumped protobuf to ^6.31.0

* Update pyproject.toml protobuf to 6.31.1

Co-authored-by: Robert Marianski <rob@marianski.com>

---------

Co-authored-by: Matthew Graber <matthew.w.graber@jpl.nasa.gov>
Co-authored-by: Robert Marianski <rob@marianski.com>

Author: grabermtw

pyproject.toml

@@ -33,7 +33,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry.dependencies]
 python = "^3.9"
-protobuf = "^5.26.1"
+protobuf = "^6.31.1"
 shapely = "^2.0.0"
 pyclipper = "^1.3.0"
 pyproj = { version = "^3.4.1", optional = true }