Set repo version to 2.30 (current)
Set repo version to 2.30 (current)

Change-Id: Ie01ea8475b978f950471b0a52fc576e59060c6c5
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/352694
Reviewed-by: Jonathan Nieder <96e93edf89a1b75e35c5d08e01778cfc4fff73d9@google.com>
Tested-by: Josip Sokcevic <4606aec58cba917397ff2e4738f995e4758694f8@google.com>

GerritCodeReview/git-repo,GerritCodeReview/git-repo