Unpin geopandas 0.13.0 in CI docs build (#2568)

The issue of reading zip files from URLs should have been resolved in geopandas>=0.13.1, see geopandas/geopandas@v0.13.0...v0.13.2

Author: weiji14

Diff for: .github/workflows/ci_docs.yml

@@ -85,7 +85,7 @@ jobs:
             netCDF4
             packaging
             contextily
-            geopandas!=0.13.0
+            geopandas
             ipython
             rioxarray
             build

Diff for: ci/requirements/docs.yml

@@ -12,7 +12,7 @@ dependencies:
     - packaging
     # Optional dependencies
     - contextily
-    - geopandas!=0.13.0
+    - geopandas
     - ipython
     - rioxarray
     # Development dependencies (general)