Update repositories.txt

[RobTillaart]

Add rotaryDecoder8, an Arduino library for a PCF8575 based rotary decoder - supports 8 rotary encoders.

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/RobTillaart/rotaryDecoder8:

Linting library in rotaryDecoder8
WARNING: library.properties includes field item(s) rotaryDecoder.h not found in library.                       
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format
         (Rule LP052)                                                                                          

Linter results for project: 0 ERRORS, 1 WARNINGS

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Linting sketch in rotaryDecoder8/examples/rotaryDecoder8_demo_RE_IO

Linter results for project: no errors or warnings

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Linting sketch in rotaryDecoder8/examples/rotaryDecoder8_demo_interrupt

Linter results for project: no errors or warnings

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Linting sketch in rotaryDecoder8/examples/rotaryDecoder8_demo_polling

Linter results for project: no errors or warnings

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Linting sketch in rotaryDecoder8/examples/rotaryDecoder8_demo_simple

Linter results for project: no errors or warnings

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Linting sketch in rotaryDecoder8/examples/rotaryDecoder8_demo_single

Linter results for project: no errors or warnings

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Linting sketch in rotaryDecoder8/examples/rotaryDecoder8_performance

Linter results for project: no errors or warnings

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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/RobTillaart/rotaryDecoder8/