seafile: renew library password - fixes #6662

Passwords for encrypted libraries are kept in memory in the server
and flushed after an hour.
This MR fixes an issue when the library password expires after 1 hour.

docs/content/seafile.md

@@ -8,9 +8,10 @@ versionIntroduced: "v1.52"
 
 This is a backend for the [Seafile](https://www.seafile.com/) storage service:
 - It works with both the free community edition or the professional edition.
-- Seafile versions 6.x and 7.x are all supported.
+- Seafile versions 6.x, 7.x, 8.x and 9.x are all supported.
 - Encrypted libraries are also supported.
 - It supports 2FA enabled users
+- Using a Library API Token is **not** supported
 
 ## Configuration
 
@@ -256,14 +257,17 @@ that has already been shared, you will get the exact same link.
 
 ### Compatibility
 
-It has been actively tested using the [seafile docker image](https://github.com/haiwen/seafile-docker) of these versions:
+It has been actively developed using the [seafile docker image](https://github.com/haiwen/seafile-docker) of these versions:
 - 6.3.4 community edition
 - 7.0.5 community edition
 - 7.1.3 community edition
+- 9.0.10 community edition
 
 Versions below 6.0 are not supported.
 Versions between 6.0 and 6.3 haven't been tested and might not work properly.
 
+Each new version of `rclone` is automatically tested against the [latest docker image](https://hub.docker.com/r/seafileltd/seafile-mc/) of the seafile community server.
+
 {{< rem autogenerated options start" - DO NOT EDIT - instead edit fs.RegInfo in backend/seafile/seafile.go then run make backenddocs" >}}
 ### Standard options