deps: Upgrade share_plus to 12.0.0, from 11.0.0

This commit is the result of the following command:
  flutter pub upgrade --major-versions share_plus

Changelog:
  https://pub.dev/packages/share_plus/changelog#1200

One notable change is that it fixes a bug that occurs
only on iOS 26:
  fluttercommunity/plus_plugins#3631

Author: rajveermalviya

pubspec.lock

@@ -906,18 +906,18 @@ packages:
     dependency: "direct main"
     description:
       name: share_plus
-      sha256: b2961506569e28948d75ec346c28775bb111986bb69dc6a20754a457e3d97fa0
+      sha256: "3424e9d5c22fd7f7590254ba09465febd6f8827c8b19a44350de4ac31d92d3a6"
       url: "https://pub.dev"
     source: hosted
-    version: "11.0.0"
+    version: "12.0.0"
   share_plus_platform_interface:
     dependency: "direct main"
     description:
       name: share_plus_platform_interface
-      sha256: "1032d392bc5d2095a77447a805aa3f804d2ae6a4d5eef5e6ebb3bd94c1bc19ef"
+      sha256: "88023e53a13429bd65d8e85e11a9b484f49d4c190abbd96c7932b74d6927cc9a"
       url: "https://pub.dev"
     source: hosted
-    version: "6.0.0"
+    version: "6.1.0"
   shelf:
     dependency: transitive
     description:

pubspec.yaml

@@ -55,7 +55,7 @@ dependencies:
   package_info_plus: ^9.0.0
   path: ^1.8.3
   path_provider: ^2.0.13
-  share_plus: ^11.0.0
+  share_plus: ^12.0.0
   share_plus_platform_interface: ^6.0.0
   sqlite3: ^2.4.0
   sqlite3_flutter_libs: ^0.5.13