Update repositories.txt

[steins1997]

No description provided.

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/steins1997/arduino_uno_r4_minima_mcp2517fd:

Linting library in arduino_uno_r4_minima_mcp2517fd
INFO: No header file found matching library name (R4_LIB_FOR_MCP2517FD.h). Best practices are for primary header        
      filename to match library name.                                                                                   
      See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format            
      (Rule LS008)                                                                                                      
WARNING: No license file found.                                                                                                                 
         See:                                                                                                                                   
         https://docs.github.com/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/licensing-a-repository
         (Rule LD002)                                                                                                                           
WARNING: Sketch(es) found outside examples and extras folders:                                    
           arduino_uno_r4_minima_mcp2517fd/example/can_canfd_task                                 
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#library-examples
         (Rule LD003)                                                                             
WARNING: Potentially misspelled examples folder name found: arduino_uno_r4_minima_mcp2517fd/example
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#library-examples 
         (Rule LD005)                                                                              

Linter results for project: 0 ERRORS, 3 WARNINGS

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

Linting sketch in arduino_uno_r4_minima_mcp2517fd/example/can_canfd_task

Linter results for project: no errors or warnings

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

Linter results for projects: 0 ERRORS, 3 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/steins1997/arduino_uno_r4_minima_mcp2517fd/