The post-release-templates workflow gets triggered whenever we create a
github release. It is fed the git tag. A script is then run to update
the templates' migrations and lockfile (if applicable).
There was a scenario where despite the packages already being published
to npm a few minutes prior, this process would error out saying that the
latest version was not available.
This PR adds a script that polls for 5 minutes against npm to wait for
the newly published version to resolve and match the git release tag.
e073183ea8