chore(deps): update ubuntu docker tag to v26

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
         include:
           - name: ubuntu
             image-name: python-base-ubuntu
-            from: ubuntu:22.04@sha256:13861e4d4047fbbe1fc1737d690dffe8d31c4524c8f203beb0c9bb1ddda35d3c
+            from: ubuntu:26.04@sha256:f3d28607ddd78734bb7f71f117f3c6706c666b8b76cbff7c9ff6e5718d46ff64
           - name: ubuntu-cloud-archive
             image-name: python-base-ubuntu-cloud-archive
             from: ghcr.io/vexxhost/ubuntu-cloud-archive:2023.1@sha256:ed3442d79c314235ba1afcbdc3b675b782e576c321cf18fa538ad0a2e8b1296e