Update workflow to latest geopandas and fiona

[davide-f]

Closes # (if applicable).

Changes proposed in this Pull Request

It add a minor fix to enable the update of geopandas and fiona versions

Checklist

• I consent to the release of this PR's code under the AGPLv3 license and non-code contributions under CC0-1.0 and CC-BY-4.0.
• I tested my contribution locally and it seems to work fine.
• Code and workflow changes are sufficiently documented.
• Newly introduced dependencies are added to envs/environment.yaml and doc/requirements.txt.
• Changes in configuration options are added in all of config.default.yaml and config.tutorial.yaml.
• Add a test config or line additions to test/ (note tests are changing the config.tutorial.yaml)
• Changes in configuration options are also documented in doc/configtables/*.csv and line references are adjusted in doc/configuration.rst and doc/tutorial.rst.
• A note for the release notes doc/release_notes.rst is amended in the format of previous release notes, including reference to the requested PR.

[davide-f]

@ekatef , the update of the environment is possible but requires the minor changes added here.
They have effect to #845, but it is minimal and can be considered.

It is advisable to ensure no issues are created to linopy, otherwise we refert the geopandas & fiona versions

[ekatef]

Looks good to me. As discussed, explicit specification of fiona engine is needed only if schema argument is applied (which basically correspond to a transformation of geopandas dataframe into geojson structure).

The only concern I have is save_to_geojson in helpers. It's used in clean_osm_data and doesn't have specification of driver and schema argument in contrast to save_to_geojson defined and used in build_shapes and cluster_network. Not sure about the implications, though.

pypsa-earth/scripts/_helpers.py

Lines 770 to 781 in fe41d4e

	def save_to_geojson(df, fn):
	if os.path.exists(fn):
	os.unlink(fn) # remove file if it exists
	# save file if the (Geo)DataFrame is non-empty
	if df.empty:
	# create empty file to avoid issues with snakemake
	with open(fn, "w") as fp:
	pass
	else:
	# save file
	df.to_file(fn, driver="GeoJSON")

Could you please check it just in case?

Otherwise, the PR looks great, and thanks a lot for tackling it! 😄

[davide-f]

This PR has second priority with respect to #1172 .
The successful merge of the two implementation is available here: https://github.com/davide-f/pypsa-earth/tree/test_linopy_latest_gpd