chore(dependabot): remove docker updates from dependabot configuration

- Removed the Docker package ecosystem from the Dependabot configuration.
- This means Dependabot will no longer open pull requests for Docker updates.

.github/dependabot.yaml

@@ -18,17 +18,6 @@ updates:
         patterns:
           - "*"
   - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: daily
-    open-pull-requests-limit: 5
-    labels:
-      - "area-dependencies"
-    groups:
-      all-dependencies:
-        patterns:
-          - "*"
-  - package-ecosystem: "docker"
     directory: "/"
     schedule:
       interval: daily