Update cool642tb-mini_L.conf #80

Job	Run time
build / Fetch Build Keyboards	9s
build / Build (seeeduino_xiao_ble, cool642tb-mini_L)	1m 20s
build / Build (seeeduino_xiao_ble, cool642tb-mini_R, studio-rpc-usb-uart)	1m 27s
build / Build (seeeduino_xiao_ble, settings_reset)	1m 26s
build / Merge Output Artifacts	2s
build / Fetch Build Keyboards	4s
build / Build (seeeduino_xiao_ble, cool642tb-mini_R, studio-rpc-usb-uart)	1m 27s
build / Build (seeeduino_xiao_ble, settings_reset)	1m 25s
build / Build (seeeduino_xiao_ble, cool642tb-mini_L)	1m 19s
build / Merge Output Artifacts	7s
	8m 46s

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