Update version to 38.2

This also includes a small bug in update_version.py when there is no change since the latest tag (i.e. when used only to bump the version).

Closes #296 (closed)

changed milestone to %v38r2

assigned to @clemenci

approved this merge request

enabled an automatic merge when the pipeline for 5a2e2c96 succeeds

mentioned in commit 58ec2ba9

merged