Update footer copyright and super footer to 2026 (#823)

* Initial plan

* Update footer copyright to 2015-2026 and super footer to 2026

Co-authored-by: ckenst <6896787+ckenst@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: ckenst <6896787+ckenst@users.noreply.github.com>

Author: Copilot

_includes/footer.html

@@ -30,14 +30,14 @@
       </div>
     </div>
     <div name="copyright" class="footer-col-wrapper">
-      © 2015 - 2025 {{ site.title }} by <a href="https://www.kenst.com/" target="_blank">Chris Kenst</a>
+      © 2015 - 2026 {{ site.title }} by <a href="https://www.kenst.com/" target="_blank">Chris Kenst</a>
     </div>
     <div name= "site-version" class="footer-col-wrapper">
       {% if site_version %}{% include site_version.html %}{% endif %}
     </div>
     <div name="super-footer" class="footer-col-wrapper-scroll">
       <p>An open source, up to date, community driven list of software testing conferences and software testing
-        workshops happening in 2025 and beyond. 
+        workshops happening in 2026 and beyond. 
       <p>Whether you are looking for quality conferences, qa conferences, qa conferences 2025, qa conferences 2026, quality engineering
         conferences, quality assurance conferences, quality assistance conferences, modern testing conferences, testing
         conferences, testing conferences 2025, testing conferences 2026, top software testing conferences,