Update syncthing to v2.0.15 (#4989)

syncthing/docker-compose.yml

@@ -7,7 +7,7 @@ services:
       APP_PORT: 8384
 
   server:
-    image: syncthing/syncthing:2.0.14@sha256:6d2ab058383b533e045cf2c32fc4c6bbe87c612c92bc2aca9f552fb099b2e123
+    image: syncthing/syncthing:2.0.15@sha256:1feffa2d4826b48f25faefed093d07c5f00304d7e7ac86fd7cda334d22651643
     restart: on-failure
     stop_grace_period: 1m
     hostname: umbrel

syncthing/umbrel-app.yml

@@ -2,7 +2,7 @@ manifestVersion: 1
 id: syncthing
 category: files
 name: Syncthing
-version: "2.0.14"
+version: "2.0.15"
 tagline: Peer-to-peer file synchronization between your devices
 description: >-
   Syncthing is a peer-to-peer continuous file synchronization
@@ -27,12 +27,12 @@ path: ""
 defaultPassword: ""
 releaseNotes: >-
   This release includes several fixes and improvements:
-    - Fixed beacon issues on point-to-point interfaces on Android
-    - Fixed version output formatting in discovery server
-    - Improved logging of device IDs on startup
-    - Removed charset declaration from JSON content-type headers
-    - Added option to disable periodic database maintenance
-    - Included license files for fork-awesome assets
+    - Fixed GUI to show restarting modal during upgrade restart
+    - Fixed language select item width limit in GUI
+    - Added id and name to Stay logged in checkbox for better password manager support
+    - Improved database maintenance with ability to wait for completion and query last run time
+    - Added comprehensive sandboxing
+    - Updated build to use Go 1.26
 
 
   Full release notes can be found at https://github.com/syncthing/syncthing/releases