Update repositories.txt

[digitalfen]

No description provided.

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/digitalfen/EmuRTC:

Linting library in EmuRTC

Linter results for project: no errors or warnings

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Linting sketch in EmuRTC/examples/emurtc
WARNING: Sketch file/folder name mismatch. The primary sketch file name must match the folder: emurtc.ino
         See: https://arduino.github.io/arduino-cli/latest/sketch-specification/#primary-sketch-file     
         (Rule SS001)                                                                                    

Linter results for project: 0 ERRORS, 1 WARNINGS

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

Linter results for projects: 0 ERRORS, 1 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/digitalfen/EmuRTC/