Update script to generate release notes

Author: sachilles

scripts/release-notes.sh

@@ -42,8 +42,8 @@ Don't forget to consider the version specific upgrading instructions for [GitLab
 
 Please note:
 
-- Before upgrading to GitLab 18 make sure to read and understand the [notes about breaking changes](https://about.gitlab.com/blog/2025/04/18/a-guide-to-the-breaking-changes-in-gitlab-18-0/).
-- In GitLab 18.0 and later, [PostgreSQL 16 or later is required](https://docs.gitlab.com/install/installation/#software-requirements).
+- Before upgrading to [GitLab 19](https://docs.gitlab.com/releases/19/gitlab-19-0-released/) make sure to read and understand the [notes about breaking changes](https://about.gitlab.com/blog/a-guide-to-the-breaking-changes-in-gitlab-19-0/).
+- In GitLab 19.0 and later, [PostgreSQL 17 is the minimum supported version](https://docs.gitlab.com/releases/19/gitlab-19-0-released/#postgresql-17-minimum-requirement).
 - See issues to be aware of when upgrading: <https://docs.gitlab.com/update/>.
 
 ## Contributing