Handle GitHub's secondary rate limit

[MaddoScientisto]

If a repository has too many labels (we have 190) the script hits a secondary rate limit and aborts around page 8.
The script should implement throttling to avoid that

Error: ✗ {"message":"You have exceeded a secondary rate limit. Please wait a few minutes before you try again. If you reach out to GitHub Support for help, please include the request ID C877:3596:1DB78AD:3C701FD:6531505C.","statusCode":403,"headers":{"server":"GitHub.com","date":"Thu, 19 Oct 2023 15:50:53 GMT","content-type":"application/json; charset=utf-8","transfer-encoding":"chunked","retry-after":"1","access-control-expose-headers":"ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Used, X-RateLimit-Resource, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, X-GitHub-SSO, X-GitHub-Request-Id, Deprecation, Sunset","access-control-allow-origin":"*","x-github-media-type":"github.v3; format=json","strict-transport-security":"max-age=31536000; includeSubdomains; preload","x-frame-options":"deny","x-content-type-options":"nosniff","x-xss-protection":"0","referrer-policy":"origin-when-cross-origin, strict-origin-when-cross-origin","content-security-policy":"default-src 'none'; base-uri 'self'; child-src github.com/assets-cdn/worker/ gist.github.com/assets-cdn/worker/; connect-src 'self' uploads.github.com www.githubstatus.com collector.github.com raw.githubusercontent.com api.githubcopilot.com api.github.com github-cloud.s3.amazonaws.com github-production-repository-file-5c1aeb.s3.amazonaws.com github-production-upload-manifest-file-7fdce7.s3.amazonaws.com github-production-user-asset-6210df.s3.amazonaws.com cdn.optimizely.com logx.optimizely.com/v1/events objects-origin.githubusercontent.com; font-src github.githubassets.com; form-action 'self' github.com gist.github.com objects-origin.githubusercontent.com; frame-ancestors 'none'; frame-src viewscreen.githubusercontent.com notebooks.githubusercontent.com support.github.com; img-src 'self' data: github.githubassets.com media.githubusercontent.com camo.githubusercontent.com identicons.github.com avatars.githubusercontent.com github-cloud.s3.amazonaws.com objects.githubusercontent.com secured-user-images.githubusercontent.com/ user-images.githubusercontent.com/ private-user-images.githubusercontent.com opengraph.githubassets.com github-production-user-asset-6210df.s3.amazonaws.com customer-stories-feed.github.com spotlights-feed.github.com objects-origin.githubusercontent.com; manifest-src 'self'; media-src github.com user-images.githubusercontent.com/ secured-user-images.githubusercontent.com/ private-user-images.githubusercontent.com github-production-user-asset-6210df.s3.amazonaws.com; script-src github.githubassets.com; style-src 'unsafe-inline' github.githubassets.com; upgrade-insecure-requests; worker-src github.com/assets-cdn/worker/ gist.github.com/assets-cdn/worker/","vary":"Accept-Encoding, Accept, X-Requested-With","x-github-request-id":"C877:3596:1DB78AD:3C701FD:6531505C","connection":"close"},"body":{"documentation_url":"https://docs.github.com/en/free-pro-team@latest/rest/overview/resources-in-the-rest-api#secondary-rate-limits","message":"You have exceeded a secondary rate limit. Please wait a few minutes before you try again. If you reach out to GitHub Support for help, please include the request ID C877:3596:1DB78AD:3C701FD:6531505C."},"method":"POST","endpoint":"/repos/redacted/redacted/labels"}