[geopandas] Add proj-bin to apt_dependencies

Author: srittau

stubs/geopandas/METADATA.toml

@@ -4,6 +4,6 @@ requires = ["numpy>=1.20", "pandas-stubs", "types-shapely", "pyproj"]
 upstream_repository = "https://github.com/geopandas/geopandas"
 
 [tool.stubtest]
-# libproj-dev is required for pyproj if wheels for the target Python version
-# are not available.
-apt_dependencies = ["libproj-dev"]
+# libproj-dev and proj-bin are required to build pyproj if wheels for the
+# target Python version are not available.
+apt_dependencies = ["libproj-dev", "proj-bin"]