Log Message:
x11/lemonbar: update to 1.5

Changelog
 - Use the specified underline color when resetting the color palette.
 - Set the WM_CLASS atom for all the lemonbar windows.
 - Call pledge() at startup when running on OpenBSD.
 - Fix a silly bug where the last monitor in the list was ignored.
 - Fix another silly bug that affected systems with mirrored outputs (Thanks @insom).
 - Code cleanup.

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