Update Mattermost to v10.2.1 (#1919)

mattermost/docker-compose.yml

@@ -8,7 +8,7 @@ services:
       PROXY_AUTH_ADD: "false"
 
   app:
-    image: alexlack/mattermost-app:v10.2.0@sha256:5dbe82040f012f484e9b1dcfcc3f773db4f2c5166170cd4f906830304ef8398b
+    image: alexlack/mattermost-app:v10.2.1@sha256:8caaad949601b961d44d4f57d387c5c8a392db992082dbd0916ff0a891aa7c0e
     user: "1000:1000"
     restart: on-failure
     stop_grace_period: 1m
@@ -30,7 +30,7 @@ services:
       - db
 
   db:
-    image: alexlack/mattermost-db:v10.2.0@sha256:7b3003cefc5a8784c15a29a858a67c4eea5ccc6fa4545b11ee76ccb0fb9e8071
+    image: alexlack/mattermost-db:v10.2.1@sha256:9cc76651b07fb8b4f7bacdf7adec2195ecf9fc4d790ef411140921c972628df0
     user: "1000:1000"
     restart: on-failure
     stop_grace_period: 1m

mattermost/umbrel-app.yml

@@ -3,7 +3,7 @@ id: mattermost
 name: Mattermost
 tagline: Team Chat, Open Source, Self-Hosted
 category: social
-version: "10.2.0"
+version: "10.2.1"
 port: 8765
 description: >-
   🚉 Mattermost is an open-source platform designed for secure collaboration throughout the software development lifecycle.
@@ -31,7 +31,16 @@ defaultUsername: ""
 defaultPassword: ""
 dependencies: []
 releaseNotes: >-
-  Mattermost Platform Release 10.2.0 includes various new improvements and bug fixes, including Connected Workspaces (Beta).
+  Mattermost v10.2.1 contains low to medium severity level security fixes. Upgrading to this release is recommended.
+
+
+  Other updates:
+
+  - Fixed an issue where plugin settings got wiped if the plugin declared some of its fields as secrets MM-61441.
+
+  - Pre-packaged Calls plugin v1.3.2.
+
+  - Contains no database or functional changes.
 
 
   Full release notes are available at https://docs.mattermost.com/about/mattermost-v10-changelog.html