x264: update distfiles and update to 20220601 snapshot

[ologantr]

Testing the changes

• I tested the changes in this PR: briefly

Local build testing

• I built this PR locally for my native architecture (x86_64-glibc)

[github-actions]

Pull Requests become stale 90 days after last activity and are closed 14 days after that. If this pull request is still relevant bump it or assign it.

[ologantr]

CC: x264 maintainer @DirectorX, xpra maintainer @ahesford
(seems like xpra tests are failing because they require an X connection
that is not available on ci, maybe make_check=ci-skip?)

[ologantr]

Rebased on 71e33f5 (xpra: update to 4.3.4)
that disables tests for xpra.
I've mainly tested ffmpeg with this update, everything seems to
be working as expected (tested by reencoding a couple of
x264 media files).
Please test this.

[github-actions]

Pull Requests become stale 90 days after last activity and are closed 14 days after that. If this pull request is still relevant bump it or assign it.