Update repositories.txt to add lautisilber/SmartComm library

[lautisilber]

Thank you dearly for all your work maintaining the Arduino project!

[github-actions]

A problem was found with your submission https://github.com/lautisilber/SmartComm

❌ ERROR: The repository has no tags. You need to create a release or tag that matches the version value in the library's library.properties file.

[github-actions]

Thanks for your interest in contributing to the Arduino Library Manager index @lautisilber
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

[lautisilber]

What about now? (Sorry for the inconvenience btw)