Re-enable TestFlight action (#3077)

* add manual workflow trigger

* bump runner/xcode

* Test new plugin PR

* Update

* Update pubspec.yaml

---------

Co-authored-by: Giancarlo Buenaflor <[email protected]>
Co-authored-by: Giancarlo Buenaflor <[email protected]>

Author: denrase

.github/workflows/testflight.yml

@@ -7,15 +7,16 @@ on:
   pull_request:
     paths:
       - '.github/workflows/testflight.yml'
+  workflow_dispatch:
 
 jobs:
   upload_to_testflight:
     name: Build and Upload to Testflight
-    runs-on: macos-13
+    runs-on: macos-15
     steps:
       - uses: actions/checkout@v4
       - uses: subosito/flutter-action@fd55f4c5af5b953cc57a2be44cb082c8f6635e8e # [email protected]
-      - run: xcodes select 15.0.1
+      - run: xcodes select 16.3
       - uses: ruby/setup-ruby@a4effe49ee8ee5b8b5091268c473a4628afb5651 # [email protected]
         with:
           ruby-version: '2.7.5'