ci: Test on Ubuntu 26.04

Signed-off-by: Zack Cerza <zack@cerza.org>

Author: zmc

.github/workflows/ci.yml

@@ -26,6 +26,8 @@ jobs:
         include:
           - os: ubuntu-24.04
             python: "3.12"
+          - os: ubuntu-26.04
+            python: "3.14"
     steps:
       - uses: actions/checkout@v7
       - name: Install packages