Remove deprecated dependabot configuration and update dependency architecture documentation for clarity and organization

.github/dependabot.yml

@@ -1,33 +0,0 @@
-version: 2
-updates:
-  # Enable version updates for GitHub Actions
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-      day: "monday"
-      time: "02:00"
-    open-pull-requests-limit: 10
-    reviewers:
-      - "scawful"
-    assignees:
-      - "scawful"
-
-  # Enable version updates for Docker
-  - package-ecosystem: "docker"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-      day: "monday"
-      time: "02:00"
-    open-pull-requests-limit: 5
-
-  # Enable version updates for npm (if any)
-  - package-ecosystem: "npm"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-      day: "monday"
-      time: "02:00"
-    open-pull-requests-limit: 5
-