Update actions/stale action to v9

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/stale	action	major	v8 -> v9

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Release Notes

actions/stale (actions/stale)

v9

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[github-actions]

Memory usage change @ 4d0b985

Board	flash	%	RAM for global variables	%
arduino:avr:mega	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:avr:uno	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:sam:arduino_due_x_dbg	0 - 0	0.0 - 0.0	N/A	N/A

Click for full report table

Board	examples/example_2DOFMoveUpAndDown flash	%	examples/example_2DOFMoveUpAndDown RAM for global variables	%	examples/example_3DOFGrippingOffset flash	%	examples/example_3DOFGrippingOffset RAM for global variables	%	examples/example_2DOFMoveCircle flash	%	examples/example_2DOFMoveCircle RAM for global variables	%	examples/example_3DOFToolAngle flash	%	examples/example_3DOFToolAngle RAM for global variables	%	examples/example_4DOF flash	%	examples/example_4DOF RAM for global variables	%
arduino:avr:mega	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:avr:uno	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:sam:arduino_due_x_dbg	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A	0	0.0	N/A	N/A

Click for full report CSV

Board,examples/example_2DOFMoveUpAndDown<br>flash,%,examples/example_2DOFMoveUpAndDown<br>RAM for global variables,%,examples/example_3DOFGrippingOffset<br>flash,%,examples/example_3DOFGrippingOffset<br>RAM for global variables,%,examples/example_2DOFMoveCircle<br>flash,%,examples/example_2DOFMoveCircle<br>RAM for global variables,%,examples/example_3DOFToolAngle<br>flash,%,examples/example_3DOFToolAngle<br>RAM for global variables,%,examples/example_4DOF<br>flash,%,examples/example_4DOF<br>RAM for global variables,%
arduino:avr:mega,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:avr:uno,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:sam:arduino_due_x_dbg,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A,0,0.0,N/A,N/A