Use RATTLER_CACHE_DIR instead of XDG_CACHE_HOME

[hadim]

Similar to conda-forge/conda-smithy#2124

Blocked by prefix-dev/rattler-build#1171

ping @jaimergp

[github-actions]

Hi! This is the staged-recipes linter and I found some lint.

It looks like some changes were made outside the recipes/ directory. To ensure everything runs smoothly, please make sure that recipes are only added to the recipes/ directory and no other files are changed.

If these changes are intentional (and you aren't submitting a recipe), please add a maintenance label to the PR.

File-specific lints and/or hints:

• build-locally.py:
  • lints:
    • Do not edit files outside of the recipes/ directory.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR () and found it was in an excellent condition.

[github-actions]

Hi! This is the staged-recipes linter and your PR looks excellent! 🚀

[jaimergp]

Thanks! Ping me again once the new rattler-build is out!

[hadim]

I propose we wait for 0.31 to be on c-f before we merge here @jaimergp (https://github.com/conda-forge/rattler-build-feedstock)