Update repositories.txt

[lucweb]

@ArduinoBot, please run the checks again after the bug fix. Library https://github.com/lucweb/SmartLadderFirmware

[github-actions]

A problem was found with your submission https://github.com/lucweb/SmartLadderFirmware

❌ ERROR: Submission URL is already in the Library Manager index.

[github-actions]

Thanks for your interest in contributing to the Arduino Library Manager index @lucweb
Please resolve the error(s) mentioned in the previous comment.

After resolving the issue, trigger this check again by doing one of the following:

• Commit the required change to the branch you submitted this pull request from.
• Comment here, mentioning @ArduinoBot in the comment.

❗ NOTE: It is not necessary to open a new pull request. ❗

More information:
https://github.com/arduino/library-registry/blob/main/README.md#if-the-problem-is-with-the-pull-request

[per1234]

@lucweb please don't submit pointless pull requests in an attempt to get the bot to run the checks. It won't accomplish anything other than wasting my time and wasting your time.

This repository is not a check running service. Please read the comment I made on your other pull request to learn how to proceed:

#5112 (comment)