Enable Dependabot to update '@metamask/*' npm packages daily

This commit adds a Dependabot configuration file to the repository to enable daily checks for new versions of '@metamask/*' npm packages, updating them if needed, and opening a maximum of 10 pull requests with these updates. The configuration file uses the 'increase-if-necessary' versioning strategy to ensure that only necessary version bumps are considered for update.

Author: Mrtenz

.github/dependabot.yml

@@ -0,0 +1,15 @@
+# Please see the documentation for all configuration options:
+# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: 'npm'
+    directory: '/'
+    schedule:
+      interval: 'daily'
+      time: '06:00'
+    allow:
+      - dependency-name: '@metamask/*'
+    target-branch: 'main'
+    versioning-strategy: 'increase-if-necessary'
+    open-pull-requests-limit: 10