chore: update snakemake-storage-plugin-cached-http to 0.2.1

[coroa]

The new version adds support for the data.pypsa.org storage and its manifests.

Checklist

• I tested my contribution locally and it works as intended.
• Code and workflow changes are sufficiently documented.
• Changed dependencies are added to pixi.toml (using pixi add <dependency-name>).
• Changes in configuration options are added in config/config.default.yaml.
• Changes in configuration options are documented in doc/configtables/*.csv.
• For new data sources or versions, these instructions have been followed.
• A release note doc/release_notes.rst is added.

[coroa]

@tgilon That's the one, i was talking about.

[lkstrp]

I just merged this with #2007