ci: simplify deploy by using kubectl rollout restart after build

.drone.yml

@@ -23,17 +23,7 @@ steps:
         --insecure
         --skip-tls-verify
 
-  - name: update-manifests
-    image: alpine/git:latest
-    environment:
-      GITEA_TOKEN: { from_secret: gitea_token }
+  - name: restart-deployment
+    image: bitnami/kubectl:latest
     commands:
-      - cd /drone/src
-      - TAG=$(echo $DRONE_COMMIT_SHA | cut -c1-8)
-      - sed -i "s/newTag:.*/newTag: $TAG/" k8s/base/kustomization.yaml
-      - git config user.email "drone@colacoder.com"
-      - git config user.name "Drone CI"
-      - git add k8s/base/kustomization.yaml
-      - "git commit -m \"chore: update image tag to $TAG [skip ci]\""
-      - git remote set-url origin https://kai:$GITEA_TOKEN@git.colacoder.com/kai/openbb-invest-api.git
-      - git push origin main
+      - kubectl rollout restart deploy/invest-api -n invest-api