Update QGIS source code url

[agiudiceandrea]

No description provided.

[adamjstewart]

Doesn't actually matter (Spack knows how to infer the correct URL) but I don't mind +1 contributors.

[Sinan81]

@agiudiceandrea you could help by adding adding version 3.32.3 to the package file. We can confirm if it builds or not later. We would still keep 3.28.11 as preferred version.

[wdconinc]

@agiudiceandrea Did you want to add the more recent version per #40538 (comment)? If not, we can just go ahead and merge this. I rebased to get past the failing gitlab check.

[adamjstewart]

Is this PR motivated by an issue you encountered, or a misunderstanding on how Spack parses URLs? If you run spack info qgis, you'll see that Spack knows how to detect and replace the version in the URL without needing to update or change it.

[adamjstewart]

This change will break Spack's version detection:

> spack url parse https://qgis.org/downloads/qgis-latest.tar.bz2
==> Parsing URL: https://qgis.org/downloads/qgis-latest.tar.bz2

==> Error: Couldn't detect version in: https://qgis.org/downloads/qgis-latest.tar.bz2

[agiudiceandrea]

So it is useless to merge this PR. Thank you anyway.

[wdconinc]

Yes, the way to add new versions is to add the version directives with the sha256 checksums. The URL is deduced automatically. This can be done easily with spack checksum qgis.

[wdconinc]

How about we close this PR and open a new PR for added versions (and their changed dependencies)?

[Sinan81]

It would be nice to have latest LTR version, 3.34.6 added after checking that it builds just fine.
One could also deprecate all in-between older versions that are not 3.xx.15 or 3.xx16.
last time I checked version 3.36 wasn't building. It would be great to fix that but it might be considerably more work than the items listed above.