Bump actions versions

[tinyboxvk]

Switch actions-rs/toolchain to dtolnay/rust-toolchain as the former one is no longer maintained
Bump actions/setup-python to v5
Bump python-version to 3.12
Bump actions/cache to v4
Bump actions/setup-node to v4
Bump actions/upload-artifact to v4
Bump actions/download-artifact to v4
Bump conda-incubator/setup-miniconda to v3
Bump actions/stale to v9

This PR aims to address deprecation warnings such as

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/setup-python@v1, actions-rs/toolchain@v1
The following actions use a deprecated Node.js version and will be forced to run on node20: actions/setup-python@v1, actions-rs/toolchain@v1
The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files.
Your workflow is using a version of actions/cache that is scheduled for deprecation, actions/cache@v1
The following actions use a deprecated Node.js version and will be forced to run on node20: actions-rs/toolchain@v1, actions/cache@v1, actions/setup-node@v3, actions-rs/cargo@v1.

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[ArthurZucker]

Thanks 🫡