Hard code releases

[ushuz]

GitHub API only returns 30 releases by default, v15.2.0 and older versions have already fallen out of the most recent 30, as a result, the doc page are empty now.

Since legacy releases won't be changed anymore, it's safe to hard code the releases in code.

[conventional-commit-lint-gcf[bot]]

🤖 I detect that the PR title and the commit message differ and there's only one commit. To use the PR title for the commit history, you can use Github's automerge feature with squashing, or use automerge label. Good luck human!

-- conventional-commit-lint bot https://conventionalcommits.org/