First Questing Quokka test rebuild

[Graham Inggs]

The first test rebuild of Questing Quokka was started on September 10,
2025 for all architectures and all components.  The rebuild is
finished for the main component on all architectures except riscv64,
and is still running for universe and multiverse.

Results (please also look at the superseded builds) can be found at:

https://people.canonical.com/~ginggs/ftbfs-report/test-rebuild-20250910-questing-questing.html

Additional build failures for packages in questing-proposed (not yet
in Questing) can be found at:

http://qa.ubuntuwire.com/ftbfs/

Please help with fixing the build failures.

Thanks
Graham