tuto5: add part on renovate

tutorial/devops/renovate-ansible.md

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+Voici à quoi pourrait ressembler le playbook Ansible démarrant notre conteneur
+Renovatebot :
+
+<div lang="en-US">
+```yaml
+- name: Launch renovate container
+  docker_container:
+    name: renovate
+    image: renovate/renovate
+    state: started
+    restart_policy: no
+    memory: 2G
+    networks:
+      - name: gitea
+    env:
+      RENOVATE_ENDPOINT: "http://gitea:3000/api/v1/"
+      RENOVATE_PLATFORM: "gitea"
+      RENOVATE_TOKEN: "{{ renovate_token }}"
+      RENOVATE_GIT_AUTHOR: "Renovatebot <renovate@gitea.sample>"
+      RENOVATE_AUTODISCOVER: "true"
+      RENOVATE_LOG_LEVEL: "info"
+```
+</div>