👷 Update CI

- Switch to centralized GitHub Action Workflows provided by Hassio Community Addons, while utilizing customized ones where needed.
- Clean Up of Unused workflow files.

.github/workflows/labels.yaml

@@ -3,20 +3,12 @@ name: Sync labels
 
 # yamllint disable-line rule:truthy
 on:
-  push:
-    branches:
-      - main
-    paths:
-      - .github/labels.yml
+  schedule:
+    - cron: "34 5 * * *"
+  workflow_dispatch:
 
 jobs:
-  labels:
-    name: ♻️ Sync labels
-    runs-on: ubuntu-latest
-    steps:
-      - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v2.3.5
-      - name: 🚀 Run Label Syncer
-        uses: micnncim/action-label-syncer@v1.3.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  workflows:
+    uses: hassio-addons/workflows/.github/workflows/labels.yaml@main
+    secrets:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}