fix(display): decrease baudrate from 70,000,000 to 60,000,000 to avoid residual noise on the display - closes #236

[sassanh]

I think the residual pixel noise was happening because we assumed higher bandwidth than what the lcd has in reality, I decreased it and couldn't reproduce it on my Pi 4 anymore.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
ubo_app/main.py	0.00%	1 Missing ⚠️

Flag	Coverage Δ
ubuntu-latest	56.76% <66.66%> (+<0.01%)	⬆️

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Files with missing lines	Coverage Δ
ubo_app/constants.py	100.00% <100.00%> (ø)
ubo_app/display.py	75.00% <100.00%> (ø)
ubo_app/main.py	0.00% <0.00%> (ø)

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[zytegalaxy]

The changes look good. I suggest we go ahead and merge this and in the meantime, I will keep an eye on residual noise issues after merge and see if it ever comes back. We can play with the baud rate if it needs further adjustments later.

[sassanh]

I suggest we go ahead and merge this and in the meantime, I will keep an eye on residual noise issues after merge and see if it ever comes back.

It would be nice if we could test it before merging.

[zytegalaxy]

I suggest we go ahead and merge this and in the meantime, I will keep an eye on residual noise issues after merge and see if it ever comes back.

It would be nice if we could test it before merging.

sure I will test it. Since this issue doesn't appear all the time, we should accept the test result with a grain of salt until this will be tested on more devices over time.