Use the new ubuntu-slim runners for light jobs/workflows #492
Description
What's needed?
GitHub is offering a new ubuntu-slim runner:
https://github.blog/changelog/2026-01-22-1-vcpu-linux-runner-now-generally-available-in-github-actions/
We should probably use them for all Action jobs/workflows that are almost trivial (like labeling, dependabot auto-merging, etc.)
Proposed solution
Change appropriate jobs to use ubuntu-slim.
Use cases
No response
Alternatives and workarounds
No response
Additional context
No response