Merge pull request 'add drone.yml for testing' (#86) from add-drone into main

Reviewed-on: https://gitea.akshun-lab.uk/akshun/public-k3s/pulls/86

.drone.yml

@@ -0,0 +1,21 @@
+---
+kind: pipeline
+type: kubernetes
+name: renovate
+trigger:
+  event:
+    - cron
+    - custom
+environment:
+  LOG_LEVEL: info
+steps:
+  - name: renovate
+    image: renovate/renovate:41.27.0
+    commands:
+      - unset GIT_COMMITTER_NAME GIT_COMMITTER_EMAIL GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL
+      - renovate
+    environment:
+      RENOVATE_TOKEN:
+        from_secret: RENOVATE_TOKEN
+      GITHUB_COM_TOKEN:
+        from_secret: GITHUB_COM_TOKEN