Adds automation for updating the pu/pu node dependency.
This also adds tools for deduplicating entries in the yarn.lock file.
Those sometimes happen when upgrading dependencies... :(
yarnpkg/yarn#3967

Combined dependabot PR

- #1329
- #1328
- #1327

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

This causes the version to flip-flop between builds.

We don't want a real version because we're pushing the code back as a
PR.

Upgrading pulumi/pkg and pulumi/sdk to version v3.122.0.

Adding an example to test parallel updates to components like ECS
services. Currently component updates are serialized (#1250), but
pulumi/pulumi#7629 fixed that.

I used this test for verifying the changes locally, now that the change
is released we can use this as a regression test