Update Renovate configuration by removing 'githubTokenWarn' and adding 'RENOVATE_GITHUB_COM_TOKEN' for improved token management in Gitea workflows.

renovate.config.cjs

@@ -2,6 +2,5 @@ module.exports = {
 	endpoint: "https://code.popov.link",
 	gitAuthor: "RenovateBot <renovatebot@noreply.localhost>",
 	optimizeForDisabled: true,
-	githubTokenWarn: true,
 	platform: "gitea",
 };