We previously held off with updating Octokit to v18 due to
their more noticable issues with typings. This commit updates
us to the latest version in order to take advantage of the new
pagination API (which is also strongly-typed), and to not fall
behind too much over time (Octokit seems to change quite often..)
We work around the problem with the types for `getContent` by just
using a type cast with a TODO (and link to the issue). Similarly we
work around a problem where the Octokit types have an incorrect type
for the name of the labels array in an API response.
PR Close#42666
We initially added logic for determining active release trains into
the merge script. Given we now build more tools that rely on this
information, we move the logic into a more general "versioning" folder
that can contain common logic following the versioning document for the
Angular organization.
PR Close#38656
Paul Gschwendtner
George Kalpakas