Update repositories.txt

[skabrits]

aded my libs SpeedMesurer and StringAction

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/skabrits/SpeedMeasurer:

Linting library in SpeedMeasurer
Rule LS008 result: fail
INFO: No header file found matching library name (SpeedMeasurer.h). Best practices are for primary header filename to match library name.
Rule LD002 result: fail
WARNING: No license file found. See: https://docs.github.com/en/free-pro-team@latest/github/creating-cloning-and-archiving-repositories/licensing-a-repository#detecting-a-license

Finished linting project. Results:
Warning count: 1
Error count: 0
Rules passed: true

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

Linting sketch in SpeedMeasurer/examples/speedOMETR

Finished linting project. Results:
Warning count: 0
Error count: 0
Rules passed: true

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

Linting sketch in SpeedMeasurer/examples/speedmeasurment

Finished linting project. Results:
Warning count: 0
Error count: 0
Rules passed: true

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

Finished linting projects. Results:
Warning count: 1
Error count: 0
Rules passed: true

[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/skabrits/StringAction/
http://downloads.arduino.cc/libraries/logs/github.com/skabrits/SpeedMeasurer/