* [ci][windows] Enable mathmore on Windows

* [ci][windows] Remove duplicates wrt global.txt

Co-authored-by: Ole Morud <82065181+olemorud@users.noreply.github.com>

This reverts commit 85177f4f.
Re-enable C++20 for Fedora 37.

* Avoid recursive powershell.exe

This prevent having up to 400 powershell instances when building ROOT (when calling `root-config --has-whatever`)

* Another try (thanks Ole)

dedent does not work because {log} is not indented.

Its Python 3.11 needs the upcoming Spark release, see https://github.com/apache/spark/pull/38987

C++20 is currently still known broken.