Merge pull request #671 from linear-b/change-whitelist-ip

Update gitStream connection IPs in custom GitHub app docs

Author: vim-zz

docs/custom-github-app.md

@@ -14,8 +14,8 @@ A GitHub application serves as the link between gitStream and GitHub. It facilit
 !!! Info "Prerequisites"
     1. GitHub Server v3.10 or higher
     2. Allowed network connection between the server and the following IPs:
-        - 54.241.87.26
-        - 54.193.121.186
+        - 13.56.203.235
+        - 54.151.81.98
 
 In this section, we'll guide you through creating a GitHub app for your self-hosted gitStream installation. By the end, you should have noted down the following values: