ci: add dependabot (#12)

# Pull Request

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## Description

add dependabot

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## Changes Made

add dependabot config file

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## Checklist

- [x] I have self-reviewed my code
- [x] Code follows project's style guidelines
- [x] Tests added and passing
- [x] Documentation updated (if needed)

.github/dependabot.yml

@@ -0,0 +1,11 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"