Update all dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/cache	action	major	v3 -> v4
actions/checkout	action	major	v3 -> v4
bazel_skylib	bazel_dep	minor	1.5.0 -> 1.7.1
rules_python	bazel_dep	major	0.31.0 -> 1.1.0

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Release Notes

actions/cache (actions/cache)

v4

Compare Source

actions/checkout (actions/checkout)

v4

Compare Source

• Check out other refs/* by commit if provided, fall back to ref by @​orhantoy in https://github.com/actions/checkout/pull/1924

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This change is 

[jwnimmer-tri]

+@rpoyner-tri for both reviews, please.

This introduces automated dependency upgrades for RobotLocomotion/models, like we already have for RobotLocomotion/drake-blender.

Also please review this file already landed on master (which I needed to merge ahead of time in order to get the bot to run):
https://github.com/RobotLocomotion/models/blob/master/.github/renovate.json

Docs are at https://docs.renovatebot.com/presets-config/#configrecommended and nearby. Not sure whether / where I should put that in a code comment somewhere?

[rpoyner-tri]

maybe document it in robots.txt ;) ?

Srsly, there should probably be a markdown file somewhere that at least has pointers to significant maintenance practices. Not sure what it should be called.

Reviewable status: all discussions resolved, LGTM missing from assignee rpoyner-tri, platform LGTM missing

[rpoyner-tri]

Reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: all discussions resolved, LGTM missing from assignee rpoyner-tri, platform LGTM missing (waiting on @renovate[bot])

[rpoyner-tri]

immediate changes look fine. I'll let you decide what to do about docs.

Reviewable status: complete! all discussions resolved, platform LGTM from [rpoyner-tri] (waiting on @renovate[bot])

[rpoyner-tri]

Reviewable status: 1 unresolved discussion, platform LGTM from [rpoyner-tri] (waiting on @renovate[bot])

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a discussion (no related file):
nit placeholder discussion about maybe more docs, to suppress the merge button a bit longer.

[jwnimmer-tri]

Reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: complete! all discussions resolved, platform LGTM from [rpoyner-tri] (waiting on @renovate[bot])

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a discussion (no related file):

Previously, rpoyner-tri (Rick Poyner (rico)) wrote…

nit placeholder discussion about maybe more docs, to suppress the merge button a bit longer.

=> #84