Update Chart apiVersion, pin image version

This makes this Chart compatible with [flux](https://fluxcd.io)
[helm-controller](https://fluxcd.io/docs/components/helm), which
requires v2 charts.

helm/wekan/Chart.lock

@@ -0,0 +1,6 @@
+dependencies:
+- name: mongodb
+  repository: https://charts.bitnami.com/bitnami
+  version: 10.0.5
+digest: sha256:f6520f39b687cb52574ec2fda514662ce913665c0fd2391b68fdb4d2eb059497
+generated: "2021-07-27T22:16:39.945592552+02:00"

helm/wekan/Chart.yaml

@@ -1,14 +1,24 @@
-name: wekan
-version: 1.0.3
-apiVersion: v1
+apiVersion: v2
+appVersion: "5.41"
+dependencies:
+  - condition: mongodb.enabled
+    name: mongodb
+    repository: https://charts.bitnami.com/bitnami
+    version: 10.0.x
 description: Open Source kanban
-home: https://wekan.github.io/
+home: https://wekan.github.io
 icon: https://wekan.github.io/wekan-logo.svg
+keywords:
+  - kanban
+maintainers:
+  - email: github@randall.cc
+    name: technotaff
+  - email: jiangyt.cn@gmail.com
+    name: jiangytcn
+  - email: varac@varac.net
+    name: varac
+name: wekan
 sources:
   - https://github.com/wekan/wekan
-maintainers:
-  - name: technotaff
-    email: github@randall.cc
-  - name: jiangytcn
-    email: jiangyt.cn@gmail.com
-engine: gotpl
+type: application
+version: 1.1.0

helm/wekan/requirements.yaml

@@ -1,5 +0,0 @@
-dependencies:
-- name: mongodb
-  version: 10.0.x
-  repository: "https://charts.bitnami.com/bitnami"
-  condition: mongodb.enabled

helm/wekan/values.yaml

@@ -14,7 +14,7 @@ serviceAccounts:
 ##
 image:
   repository: quay.io/wekan/wekan
-  tag: latest
+  tag: v5.41
   pullPolicy: IfNotPresent
 
 ## Configuration for wekan component