Bump workflows to Ubuntu 26.04 (#486)

Author: IsaacG

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   ci:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
 
     steps:
       - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3