chore: standardize dependabot config

Author: fey

.github/dependabot.yml

@@ -1,25 +1,31 @@
 version: 2
 updates:
-  - package-ecosystem: "github-actions"
+  - package-ecosystem: "npm"
     directory: "/"
     schedule:
       interval: "monthly"
-      time: "03:00"
-      timezone: "Etc/UTC"
     open-pull-requests-limit: 1
-    labels: ["dependencies", "automated"]
     groups:
-      github-actions-all:
-        patterns: ["*"]
+      all-npm-dependencies:
+        patterns:
+          - "*"
 
-  - package-ecosystem: "npm"
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    open-pull-requests-limit: 1
+    groups:
+      all-docker-dependencies:
+        patterns:
+          - "*"
+
+  - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: "monthly"
-      time: "03:00"
-      timezone: "Etc/UTC"
     open-pull-requests-limit: 1
-    labels: ["dependencies", "automated"]
     groups:
-      npm-all:
-        patterns: ["*"]
+      all-github-actions-dependencies:
+        patterns:
+          - "*"