Update telegram-alpha to 3.6-109808,718 (#4878)

Casks/telegram-alpha.rb

@@ -1,11 +1,11 @@
 cask 'telegram-alpha' do
-  version '3.6-109781,716'
-  sha256 '85bbbea8e3f3a04026acadb25fa61644ca62ff02d427162c460a7caa866daeb6'
+  version '3.6-109808,718'
+  sha256 '06aea4e352463d2f0049ed0ac128a46bf1c54e8faeadbc7122ee817575294ce5'
 
   # 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: '6de20b1c4c2ed634eaf5caca1b8e45e9ab20ffdbf20e6d883e644a8cf129604c'
+          checkpoint: '827d011abb77692de680b4a4b20d062fcc99f98ae33f156f12975de0a21c6f25'
   name 'Telegram for macOS'
   name 'Telegram Swift'
   homepage 'https://macos.telegram.org/'