Remove the exception if no X-RateLimit-Remaining is found in the header

[joaopamaral]

Description of change

Github removed the X-RateLimit-Remaining from the releases endpoint causing the exception even returning status 200. We can let the backoff deal with the cases with no rate limit remaining.

• Tested locally with meltano

meltano el tap-github target-parquet --select releases

Manual QA steps

Risks

Rollback steps

• revert this branch

AI generated code

https://internal.qlik.dev/general/ways-of-working/code-reviews/#guidelines-for-ai-generated-code

• this PR has been written with the help of GitHub Copilot or another generative AI tool

[joaopamaral]

Other users are facing the same issue:
https://github.com/orgs/community/discussions/140079

And Github API docs still indicate the rate limit remains in the response header. https://docs.github.com/en/rest/using-the-rest-api/rate-limits-for-the-rest-api?apiVersion=2022-11-28#checking-the-status-of-your-rate-limit