Add Release Drafter and Dependabot to the CI (#290)

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/release-drafter.yml

@@ -0,0 +1,19 @@
+name-template: 'v$NEXT_PATCH_VERSION'
+tag-template: 'v$NEXT_PATCH_VERSION'
+categories:
+  - title: '🚀 Features'
+    labels:
+      - 'feature'
+  - title: '🐛 Bug Fixes'
+    labels:
+      - 'bug'
+  - title: '🧰 Maintenance'
+    labels:
+      - 'build'
+  - title: '🌱 Dependency Updates'
+    labels:
+      - 'dependency-update'
+change-template: '- $TITLE @$AUTHOR (#$NUMBER)'
+template: |
+  ## Changes
+  $CHANGES

.github/workflows/release-drafter.yml

@@ -0,0 +1,13 @@
+name: Release Drafter
+
+on:
+  push:
+    branches: ['master']
+
+jobs:
+  update_release_draft:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: release-drafter/release-drafter@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}