update tool config

.github/dependabot.yml

@@ -1,8 +1,19 @@
 version: 2
 updates:
-- package-ecosystem: pip
+- package-ecosystem: "pip"
+  directory: "/requirements"
+  target-branch: "2.0.x"
+  versioning-strategy: "lockfile-only"
+  schedule:
+    interval: "monthly"
+    day: "monday"
+    time: "16:00"
+    timezone: "UTC"
+  open-pull-requests-limit: 99
+- package-ecosystem: "github-actions"
   directory: "/"
   schedule:
-    interval: monthly
-    time: "08:00"
-  open-pull-requests-limit: 99
+    interval: "monthly"
+    day: "monday"
+    time: "16:00"
+    timezone: "UTC"