fix(desktop): bump tauri.conf.json version to 0.1.11

Tauri reads the bundle version from here, not from Cargo.toml or
package.json -- missed in the v0.1.11 bump, so the installers built
with the tag still said 0.1.10.

Author: gevianajr

desktop/src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "FormsLang",
-  "version": "0.1.10",
+  "version": "0.1.11",
   "identifier": "tech.b2dev.formslang",
   "build": {
     "frontendDist": "../ui-shell"