Release 1.5.2

[aignas]

Cherry-picks are the PRs marked with 1.5.2 milestone:

• fix(core): do not assume rules_python runtime #3134
• chore(deps): upgrade bazel-skylib to 1.8.1 #3118
• fix(pypi): support properly installing sdists via pypi without index #3115
• fix: Don't let deprecated test targets get matched by '...' #3045
• Update changelog

[rickeylev]

PRs approved and queued. (I think some will need to be rebased to avoid merge conflicts on the changelog)