The code are wrapped due to us using line-length=79 before, but now some
of the code can easily fit in 88 chars.
The formatter did not change this automatically when we changed line-length,
because of magic trailing commas that gets added when they turn into multiple lines.
Black/ruff wrapping them in parens and splitting them into multiple lines
was making it difficult to read.
* drop Python 3.8
Note that this PR only makes typing related changes.
Other changes can be done once this gets merged, they
are relatively few in numbers.
* bump build python version
* add typing_extensions to lint group
We used to have it named `cache` before, but these days it is clear that
you can have three odbs: just odb (e.g. in-memory), cache (typically local)
or remote (typically cloud). Fixing naming here before proceeding with
introducing `out.odb` and `out.cache`.
In preparation for migration to https://github.com/iterative/dvc-data/pull/304