Entering freeze for libvirt-6.6.0

[Jiri Denemark]

I have just tagged v6.6.0-rc1 in the repository and pushed signed
tarballs and source RPMs to https://libvirt.org/sources/

Please give the release candidate some testing and in case you find a
serious issue which should have a fix in the upcoming release, feel
free to reply to this thread to make sure the issue is more visible.

If you have not done so yet, please update NEWS.rst to document any
significant change you made since the last release.

As already announced I'm on vacation next week and thus I won't make the
usual second release candidate. If everything looks good when I'm back,
I will make the final release on Aug 1.

Thanks,

Jirka