Update deployment to use infra repository

Updates the deployment workflows to pull in the deployment.yaml file
from the infra repository in keeping with our other projects.

.github/workflows/build-deploy.yml

@@ -62,21 +62,24 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.ref == 'refs/heads/main' }}
     steps:
-      - name: Checkout code
+      - name: Checkout Kubernetes repository
         uses: actions/checkout@v4
+        with:
+          repository: python-discord/infra
+          path: infra
 
-      - uses: azure/setup-kubectl@v3
+      - uses: azure/setup-kubectl@v4
 
       - name: Authenticate with Kubernetes
-        uses: azure/k8s-set-context@v3
+        uses: azure/k8s-set-context@v4
         with:
           method: kubeconfig
           kubeconfig: ${{ secrets.KUBECONFIG }}
 
       - name: Deploy to Kubernetes
-        uses: Azure/k8s-deploy@v4
+        uses: azure/k8s-deploy@v5
         with:
           namespace: bots
           manifests: |
-              deployment.yaml
+            infra/kubernetes/namespaces/bots/metricity/deployment.yaml
           images: 'ghcr.io/python-discord/metricity:${{ inputs.sha-tag }}'