CrosArtifactPrep: Install Python 3.8 package

Python 3.6 is being removed from the SDK.  As such, this path does not
exist anymore.

Note: this neglects that just changing to /usr/lib64/python3.8 should
not be considered a long-term sustainable solution, as the upgrade to
Python 3.11 is just around the corner.  The maintainers of this code
should consider using Build API to get the paths to install, or
alternatively, just install via the Python ecosystem (e.g., setup.py)
to avoid copying SDK paths entirely.

BUG=b:187794810
TEST=CQ

Change-Id: Iae6c8b9844742e104572f9d0613735d991e626c2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/4919265
Tested-by: Jack Rosenthal <[email protected]>
Reviewed-by: Derek Beckett <[email protected]>
Commit-Queue: Jack Rosenthal <[email protected]>
1 file changed