Update repositories.txt

[sridharrajagopal]

Added UpbeatLabs_MCP39F521

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/upbeatlabs/UpbeatLabs_MCP39F521:

Linting library in UpbeatLabs_MCP39F521
WARNING: library.properties name value UpbeatLabs MCP39F521 is longer than the recommended length of 16 characters.
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format    
         (Rule LP010)                                                                                              
WARNING: library.properties name UpbeatLabs MCP39F521 contains spaces. Although supported, best practices is to not use 
         spaces.                                                                                                        
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format         
         (Rule LP015)                                                                                                   

Linter results for project: 0 ERRORS, 2 WARNINGS

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Linting sketch in UpbeatLabs_MCP39F521/examples/EEPROMExample

Linter results for project: no errors or warnings

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Linting sketch in UpbeatLabs_MCP39F521/examples/EnergyAccumulationExample

Linter results for project: no errors or warnings

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Linting sketch in UpbeatLabs_MCP39F521/examples/EventExample

Linter results for project: no errors or warnings

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

Linting sketch in UpbeatLabs_MCP39F521/examples/GetEnergyData

Linter results for project: no errors or warnings

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Linting sketch in UpbeatLabs_MCP39F521/examples/MakerFaireExample

Linter results for project: no errors or warnings

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

Linting sketch in UpbeatLabs_MCP39F521/examples/WriteEnergyDataToSDCard

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/upbeatlabs/UpbeatLabs_MCP39F521/