chore(deps): update ghcr.io/ublue-os/silverblue-main:latest docker digest to 909405a (#4139)

Co-authored-by: ubot-7274[bot] <217212047+ubot-7274[bot]@users.noreply.github.com>

Author: ubot-7274[bot]

image-versions.yml

@@ -2,7 +2,7 @@ images:
   - name: silverblue-main
     image: ghcr.io/ublue-os/silverblue-main
     tag: latest
-    digest: sha256:284eff5dfa38f6e5edd15ce6894142d85ba4be3bf60695f00dd4c57f1613c928
+    digest: sha256:909405a58babf2b0a2ee69ef7f726e82155b8cc27eb19e3056260b761cbedf7b
   - name: common
     image: ghcr.io/projectbluefin/common
     tag: latest