ci: adopt reusable workflows from `named-data/actions`

Change-Id: I4219458d27723ee7c408a665f7b31a1ca557b1e0
diff --git a/docs/conf.py b/docs/conf.py
index 4e2d02d..199e8d6 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -10,7 +10,7 @@
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
 
 project = 'ChronoSync: A Synchronization Protocol for NDN'
-copyright = 'Copyright © 2012-2022 Regents of the University of California.'
+copyright = 'Copyright © 2012-2023 Regents of the University of California.'
 author = 'Named Data Networking Project'
 
 # The short X.Y version.