chore: update renovate and labelsync config

Author: favna

.github/renovate.json

@@ -1,4 +1,4 @@
 {
 	"$schema": "https://docs.renovatebot.com/renovate-schema.json",
-	"extends": ["github>sapphiredev/readme:sapphire-renovate"]
+	"extends": ["github>sapphiredev/.github:sapphire-renovate"]
 }

.github/workflows/labelsync.yml

@@ -11,11 +11,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Project
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # renovate: tag=v2
+        uses: actions/checkout@v4
         with:
-          repository: 'sapphiredev/readme'
+          sparse-checkout: .github/labels.yml
+          sparse-checkout-cone-mode: false
+          repository: 'sapphiredev/.github'
       - name: Run Label Sync
-        uses: crazy-max/ghaction-github-labeler@77450f9fa47c41fbab15c0923417fff00730ffa3 # tag=v4
+        uses: crazy-max/ghaction-github-labeler@v5
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           yaml-file: .github/labels.yml