doc: increment copyright year

mnezerka · mnezerka · commit 62269d76e6f2 · 2021-06-18T10:09:12.000+02:00
diff --git a/docs/conf.py b/docs/conf.py
@@ -20,7 +20,7 @@
 # -- Project information -----------------------------------------------------
 
 project = 'PyOData'
-copyright = '2019 SAP SE or an SAP affiliate company'
+copyright = '2021 SAP SE or an SAP affiliate company'
 author = 'SAP'
 
 # The short X.Y version
