docs: Updates copyright year in python headers

[frgfm]

This PR updates the year range of the copyright in Python headers.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a295b46) 92.95% compared to head (54d2ce1) 92.95%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #84   +/-   ##
=======================================
  Coverage   92.95%   92.95%           
=======================================
  Files          10       10           
  Lines         667      667           
=======================================
  Hits          620      620           
  Misses         47       47           

Files	Coverage Δ
torchscan/crawler.py	84.32% <ø> (ø)
torchscan/modules/flops.py	97.51% <ø> (ø)
torchscan/modules/macs.py	100.00% <ø> (ø)
torchscan/modules/memory.py	100.00% <ø> (ø)
torchscan/modules/receptive.py	83.78% <ø> (ø)
torchscan/process/memory.py	39.13% <ø> (ø)
torchscan/utils.py	100.00% <ø> (ø)