Update repositories.txt

[GyverLibs]

No description provided.

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/GyverLibs/GyverNTP:

Linting library in GyverNTP
WARNING: library.properties version value 1.0 is not compliant with the semver specification. See https://semver.org/   
         (Rule LP021)                                                                                                   
WARNING: The library.properties paragraph field repeats the sentence field. These are displayed together so redundancy  
         is not needed. (Rule LP036)                                                                                    

Linter results for project: 0 ERRORS, 2 WARNINGS

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Linting sketch in GyverNTP/examples/testBlink

Linter results for project: no errors or warnings

-------------------

Linter results for projects: 0 ERRORS, 2 WARNINGS

[github-actions]

Your submission has now been accepted! Thanks for your contribution to the Arduino Library Manager index.

The library(s) will be available for installation via Library Manager within a day's time.

You can check the logs from the Library Manager indexer for your library(s) here:
http://downloads.arduino.cc/libraries/logs/github.com/GyverLibs/GyverNTP/