docs: fixed outdated copyright statement (#1929)

* fixed outdated copyright statement in docs

- added current copyright year at time of docs build

* Codex year resolution fix.

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* use sphinx %Y build in for the year

---------

Co-authored-by: Jan Teusen (né Boelts) <janfb@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Jan <jan.boelts@mailbox.org>

Author: 3 people

docs/conf.py

@@ -22,8 +22,8 @@
 # -- Project information -----------------------------------------------------
 
 project = 'sbi'
-copyright = '2020, sbi team'
 author = 'sbi team'
+copyright = f'2020-%Y, {author}'
 
 
 # -- General configuration ---------------------------------------------------