Update telegram-alpha to 2.99.95673,342 (#3833)

Casks/telegram-alpha.rb

@@ -1,11 +1,11 @@
 cask 'telegram-alpha' do
-  version '2.98.95664,341'
-  sha256 '374dae5373577845ed36d6cdf08ad3d90e9294cacb4d9276b4e3b46baa3b5464'
+  version '2.99.95673,342'
+  sha256 'c5f3c58d7d5ce9188a6d199db13548ee13fbfa31aa7c8e0afa9c291fc578c41a'
 
   # hockeyapp.net/api/2/apps/6ed2ac3049e1407387c2f1ffcb74e81f was verified as official when first introduced to the cask
   url "https://rink.hockeyapp.net/api/2/apps/6ed2ac3049e1407387c2f1ffcb74e81f/app_versions/#{version.after_comma}?format=zip"
   appcast 'https://rink.hockeyapp.net/api/2/apps/6ed2ac3049e1407387c2f1ffcb74e81f',
-          checkpoint: 'edc3ad3ecccd52d10c629aeaa68d01e6e388466744132061ad4298116de4f614'
+          checkpoint: 'd9a64ff6ff40aef2531653949ac0afca6058fc73178fd4a418b53593def0aefb'
   name 'Telegram for macOS'
   name 'Telegram Swift'
   homepage 'https://macos.telegram.org/'