Upgrade to GitHub-native Dependabot (#21874)

* Upgrade to GitHub-native Dependabot

* Add GitHub Action and EE NPM

* Remove old ignored package versions

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Diego Sampaio <chinello@gmail.com>

.github/dependabot.yml

+version: 2
+updates:
+
+# Main repo NPM package
+- package-ecosystem: npm
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10
+
+## EE dependencies
+- package-ecosystem: npm
+  directory: "/ee/server/services"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10
+
+# Maintain dependencies for GitHub Actions
+- package-ecosystem: "github-actions"
+  directory: "/"
+  schedule:
+    interval: "daily"