chore: Use UV for dependency management

[ghislainbourgeois]

Description

Use uv for dependency management. Doing so, additional changes were required:

• Replace Dependabot with Renovate, as the former does not support uv
• Replace action-operator with concierge, because the former insists on installing tox with no way of disabling it, and we need to install tox differently to support uv
• Install rustup snap to install the latest stable Rust compiler, required for some newer dependencies that do not build anymore with the version in the apt repository.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have added tests that validate the behaviour of the software
• I validated that new and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have bumped the version of the library

[gruyaume]

I think we could expand on the PR description with a rationale. Plus, this PR does much more than add uv for dependency management. It also replaces dependabot with renovate, it introduces concierge for setting up the integration tests environment, it replaces the rust build package with a build snap. This is a pretty major change and a proper description would be useful to review it.

[ghislainbourgeois]

I think we could expand on the PR description with a rationale. Plus, this PR does much more than add uv for dependency management. It also replaces dependabot with renovate, it introduces concierge for setting up the integration tests environment, it replaces the rust build package with a build snap. This is a pretty major change and a proper description would be useful to review it.

Good point, I updated the description with the rationale for each change.

[saltiyazan]

This looks good :) assuming renovate creates security PRs automatically.
One thing I am missing is to modify this file to allow the PRs to be auto-approved and merged. (Or at least let's remove that file)

[ghislainbourgeois]

This looks good :) assuming renovate creates security PRs automatically. One thing I am missing is to modify this file to allow the PRs to be auto-approved and merged. (Or at least let's remove that file)

Good point, I removed the file and enabled Renovate's automerge. I also set the repository settings for Renovate to be able to bypass approval.

Addressed requested changes