Pixi warning in pytest

The pytest CI jobs emit a warning about post link scripts in Pixi. I don't what causes it or if we can safely ignore it.

See, e.g., https://git.esss.dk/dram/code-shelf/dream/-/jobs/70944

----------------------------- Captured stderr call -----------------------------
 WARN Skipped running the post-link scripts because `run-post-link-scripts` = `false`
	- bin/.librsvg-pre-unlink.sh
To enable them, run:
	pixi config set --local run-post-link-scripts insecure
More info:
	https://pixi.sh/latest/reference/pixi_configuration/#run-post-link-scripts