Update copyright years to 2026

Updated copyright notices across documentation:
- zensical.toml: 2016-2023 → 2016-2026
- docs/index.md: 2010-2023 → 2010-2026 (software license)
- mkdocs.yml: 2016-2023 → 2016-2026 (legacy config)

Co-Authored-By: Claude Sonnet 4.5 (1M context) <noreply@anthropic.com>

Author: tyson-swetnam

docs/index.md

@@ -127,7 +127,7 @@ CyVerse is a Software as a Service (SaaS) platform built on modern cloud-native
 
 !!! Info ":fontawesome-brands-creative-commons-by: SOFTWARE LICENSE"
 
-    Copyright (c) 2010-2023, The Arizona Board of Regents on behalf of The University of Arizona
+    Copyright (c) 2010-2026, The Arizona Board of Regents on behalf of The University of Arizona
 
     All rights reserved.
 

mkdocs.yml

@@ -10,7 +10,7 @@ repo_url: https://github.com/cyverse/docs
 edit_uri: edit/main/docs
 
 # Copyright
-copyright: 'Copyright © 2016-2023 CyVerse'
+copyright: 'Copyright © 2016-2026 CyVerse'
 
 # JavaScript for Intercom Widget
 extra_javascript:

zensical.toml

@@ -11,7 +11,7 @@ repo_url = "https://github.com/cyverse/docs"
 edit_uri = "edit/main/docs"
 
 # Copyright notice
-copyright = "Copyright © 2016-2023 CyVerse"
+copyright = "Copyright © 2016-2026 CyVerse"
 
 # Theme configuration
 [project.theme]