fixes #322 check for null

[Arteiii]

fixes #322

ig the main issue was an api issue checking for null should work fine otherwise we can add semver validation via regex

[mre]

To make this bulletproof, we can tell curl to treat HTTP errors (like 403 or 404) as actual failures using the -f (or --fail) flag, and show errors with -S (or --show-error):

release=$(curl -sSf https://api.github.com/repos/lycheeverse/lychee/releases/latest | jq -r .tag_name)

With -sSf, if GitHub returns a 403, curl will exit with a failure code, triggering the pipeline's pipefail and stopping the script immediately.

This could be in addition to your check.

[mre]

Perfect. 👌