musescore: update to 3.6.2

Fixes

    Fixed an issue with gap between staff and end barline with courtesy clef
    #316502: Fixed an issue with accessibility of "score migration" dialog
    #275837: Fixed a crash related to QtWebEngineProcess after update
    #316373: Fixed an issue with appearance of part name in timeline rather than instrument name
    #316125: Fixed an issue with handling of "dockable" windows focus on visibility toggle
    #316096: Fixed an issue when custom gliss text reverts to default "gliss"
    #315963: Added missing Fl端gelhorns to concert bands, orchestral and big bands, jazz combos and brass ensembles
    #315677: Fixed an issue with unavailable beaming across crotchet rests
    #316610: Fixed an issue when staff spacer does not work on last system of page
    #316645: Fixed an issue with broken swapping notes/chords with Shift + Left/Right
    #315904: Fixed an issue with incomplete import from ScoreScan XML file
    Fixed an issue with unsaved default settings to pre 3.6 score after 'reset to defaults'
    #316896: Fixed an issue with Banjo fifth string fret numbers
    #316555: Fixed an issue when invisible breath impacted a layout
    #316679: Fixed a crash during the opening a score with a missing section break
    #305777: Applying tremolo is a toggle operation now
    #315408: Fixed an issue when "Mixer" panel not fully shown when opened
    #316754: Fixed an issue with empty rehearsal mark not deleted after entering a line break
    #316869: Fixed an issue when multi-measure rest numbers can collide with other elements
    #316797: Fixed an issue when deleting a breath/caesura leads to selection of the wrong note
    #316559: Fixed an issue when part inherits non-default style from score
    #316441: Fixed a crash when changing time signature in front of a corrupted measure
    #316571: Updated a close icon for Import Midi Panel (and Find/GoTo)
    #315779: Fixed an issue with auto-size of vertical frame when dragging the height handle

(gutteridge)