bump plugin version, add changelog

Author: harminius

Mergin/metadata.txt

@@ -4,14 +4,17 @@ name=Mergin
 qgisMinimumVersion=3.22
 qgisMaximumVersion=4.99
 description=Handle Mergin Maps projects
-version=2026.4.2
+version=2026.4.3
 author=Lutra Consulting
 email=info@merginmaps.com
 about=Mergin Maps is a repository for storing and tracking changes to QGIS projects/data and has its mobile app for field geo-surveys. With this plugin, users can upload and sync their data to Mergin Maps service.
 ; end of mandatory metadata
 
 ; start of optional metadata
-changelog=2026.4.2
+changelog=2026.4.3
+  - Indicate opened project in browser
+  - Fix size check for files to upload
+  <p>2026.4.2
   - Fixed project syncing from the browser
   - Fixed filtering for relations with multiple values
   <p>2026.4.1