Use Gitea Actions for release publishing (#436)

Co-authored-by: pat-s <pat-s@noreply.gitea.io>
Co-authored-by: pat-s <patrick.schratz@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/436
Reviewed-by: pat-s <pat-s@noreply.gitea.io>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-committed-by: techknowlogick <techknowlogick@gitea.io>

.drone.yml

@@ -45,52 +45,3 @@ steps:
     image: cytopia/yamllint:alpine-1
     commands:
       - yamllint -f colored .
-
----
-kind: pipeline
-type: docker
-name: release-version
-
-platform:
-  os: linux
-  arch: arm64
-
-trigger:
-  event:
-    - tag
-
-steps:
-  - name: generate-chart
-    pull: always
-    image: alpine:3.17
-    commands:
-      - apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/testing helm
-      - apk add --no-cache curl
-      - helm dependency update
-      - helm package --version "${DRONE_TAG##v}" ./
-      - mkdir gitea
-      - mv gitea*.tgz gitea/
-      - curl -L -o gitea/index.yaml https://dl.gitea.io/charts/index.yaml
-      - helm repo index gitea/ --url https://dl.gitea.io/charts --merge gitea/index.yaml
-
-  - name: upload-chart
-    pull: always
-    image: plugins/s3:latest
-    settings:
-      acl:
-        from_secret: aws_s3_acl
-      region:
-        from_secret: aws_s3_region
-      bucket:
-        from_secret: aws_s3_bucket
-      endpoint:
-        from_secret: aws_s3_endpoint
-      path_style:
-        from_secret: aws_s3_path_style
-      access_key:
-        from_secret: aws_access_key_id
-      secret_key:
-        from_secret: aws_secret_access_key
-      source: gitea/*
-      target: /charts
-      strip_prefix: gitea/