The Shadow CI environment has hard-coded versions of some tools. These versions should be periodically updated, and any compatibility issues fixed.

• rust default stable version (ci/rust-toolchain-stable.toml)
• rust default nightly version (ci/rust-toolchain-nightly.toml)
• python version for the python lint (.github/workflows/lint.yml)
• tor and tgen versions for the tor tests (.github/workflows/extra_tests.yml)
• versions of github actions (uses: <action-name@version> in .github/workflows/*.yml)

Shadow's dependencies may also need to be updated.

# The cargo `upgrade` subcommand requires `cargo install cargo-edit`. `cargo upgrade`
# won't update the lock file for all dependencies, so `cargo update` is also needed.
cd src && cargo upgrade --incompatible && cargo update

This issue is automatically generated every 4 months by the workflow "CI Maintenance".