executing-2.20 is needed for better python-3.13 compatibility see #1578

So the slim version for python-3.13 is re-spinned, as an rc3

** Experimental **
If you apply the procedure below on a dot version, you will end up with a sllm version except:

you will miss the \t\pandoc.exe executable.
it won't work if the package editor:
re-spin the wheel (having for example forgotten a doc, a licence, a test)
or delete the version.
Also with this method added, WinPython can no longer ship "patched" wheels, or pre-wheels

Typical usage:
pip download --dest C:\your_temp_Wheelhouse --no-deps --require-hashes -r requirement_hash.WinPython64-3.13.3.0slimrc3.txt
pip install --no-deps --no-index --trusted-host=None --find-links=C:\your_temp_Wheelhouse --require-hashes -r requirement_hash.WinPython64-3.13.3.0slimrc3.txt