This update brings a number of bugfixes. The most visible to us is it
should fix partial clones for older clients. This means we can reenable
partial cloning again. Note that we have testing of partial clones which
should detect if this is working for us.
There are no template diffs for the three template files we override
between 1.16.5 and 1.16.6. The release notes can be found at:
https://github.com/go-gitea/gitea/blob/v1.16.6/CHANGELOG.md#1166---2022-04-20
Change-Id: Ie5b6a3bcd73f135fe8914b55896a3a428a41dccc