Dependabot: Remove comments

.github/dependabot.yml

@@ -2,21 +2,16 @@
 
 version: 2
 updates:
-  # Enable version updates for Cargo
   - package-ecosystem: "cargo"
-    # Look `Cargo.toml` in the repository root
     directory: "/"
-    # Check for updates every week
     schedule:
       interval: "weekly"
       timezone: "Europe/Berlin"
     # Automatic rebases cancel pending bors merges
     rebase-strategy: "disabled"
-  # Enable version updates for Github Actions
+
   - package-ecosystem: "github-actions"
-    # Set to `/` to check the Actions used in `.github/workflows`
     directory: "/"
-    # Check for updates every week
     schedule:
       interval: "weekly"
       timezone: "Europe/Berlin"