Fix `liftoff` `conda` environment

[GallVp]

Have you checked the docs?

• [X] nf-core website: troubleshooting
• [X] nf-core modules documentation

Description of the bug

The underlying dependencies have for the liftoff conda recipe have shifted and the nf-test fails.

https://github.com/bioconda/bioconda-recipes/blob/eaabca1dce7d7a825e472403421d2262cb8a016f/recipes/liftoff/meta.yaml#L24

Command used and terminal output

No response

Relevant files

No response

System information

No response