Add AST 2026 conference (#830)

* Initial plan

* Add AST 2026 conference to current.yml

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

_data/current.yml

@@ -104,6 +104,11 @@
   url: https://paristestconf.com/?utm_source=testingconferences
   status: <a href="https://www.helloasso.com/associations/association-francaise-de-la-qualite-et-du-test/evenements/paristestconf-7eme-edition/?utm_source=testingconferences" target="_blank">Registration is Open</a>
 
+- name: The 7th ACM/IEEE International Conference on Automation of Software Test (AST 2026)
+  location: Rio de Janeiro, Brazil
+  dates: "April 12-18, 2026"
+  url: https://conf.researchr.org/home/ast-2026#About
+
 - name: UCAAT 2026 - 12th UCAAT User Conference on Advanced Automated Testing
   location: Sophia Antipolis, FR
   dates: "April 14-16, 2026"