Mock v6.1 released (and mock-core-configs v42.2)

[Miroslav Suchý]

|Hello maintainers! I'm glad I can announce that we have a new release of Mock v6.1 and mock-core-configs v42.2. What's 
there? Tl;dr: |more hermetic-build improvements, AlmaLinux Kitten 10, Azure Linux 2.0 and 3.0, Kylin 10, Navy Linux 8, openSUSE Leap 15.6.|Full release notes: https://rpm-software-management.github.io/mock/Release-Notes-6.1 The updated packages just landed 
in Bodhi. Enjoy.|