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

@@ -21,7 +21,7 @@ jobs:
         include:
           - name: ubuntu
             image-name: python-base-ubuntu
-            from: ubuntu:24.04@sha256:33ceb71981b602c1a7443a53469e4dba065f7503eab3078a2d7a57a2ab987517
+            from: ubuntu:26.04@sha256:513c074113a871b51a8d16ab445c88779d6452d937a164fb5cc479f32668a41d
           - name: ubuntu-cloud-archive
             image-name: python-base-ubuntu-cloud-archive
             from: ghcr.io/vexxhost/ubuntu-cloud-archive:main@sha256:f7ab9758a822f51f6e30e829ffbe3e761fce5c21d99d005e42afbf8f8a297c25