feat(tools): enable dependabot updates

.github/dependabot.yml

@@ -0,0 +1,39 @@
+version: 2
+updates:
+  - package-ecosystem: npm
+    directory: '/'
+    schedule:
+      interval: daily
+    open-pull-requests-limit: 20
+    labels:
+      - 'bot: dependencies'
+      - 'platform: root'
+
+  - package-ecosystem: npm
+    directory: '/client'
+    schedule:
+      interval: daily
+    open-pull-requests-limit: 20
+    labels:
+      - 'bot: dependencies'
+      - 'platform: client'
+
+  - package-ecosystem: npm
+    directory: '/api-server'
+    schedule:
+      interval: 'weekly'
+      day: 'sunday'
+    open-pull-requests-limit: 20
+    labels:
+      - 'bot: dependencies'
+      - 'platform: api'
+
+  - package-ecosystem: npm
+    directory: '/curriculum'
+    schedule:
+      interval: 'weekly'
+      day: 'sunday'
+    open-pull-requests-limit: 20
+    labels:
+      - 'bot: dependencies'
+      - 'scope: learn'

.github/workflows/housekeeping.yml

@@ -0,0 +1,15 @@
+name: Housekeeping
+
+on:
+  pull_request
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - name: 'Merge Minor SemVer Updates'
+        uses: ahmadnassri/action-dependabot-auto-merge@master
+        with:
+          target: minor
+          github-token: ${{ secrets.AUTO_MERGE_TOKEN }}