ALE 2.0.0 Release Prep - #760

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9, actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1, conda-incubator/setup-miniconda@505e6394dae86d6a5c7fbb6e3fb8938e3e863830. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

warning libmamba Security Warning: This transaction includes executing package scripts (pre/post-link/unlink) if present. These scripts can contain arbitrary code. Please ensure you trust the package sources.

ERROR: 'conda activate "ale"' exited with code 1.

EnvironmentNameNotFound: Could not find conda environment: ale You can list all discoverable environments with `conda info --envs`.

WARNING conda.cli.condarc:set_key(524): Key auto_activate_base is an alias of auto_activate; setting value with latter