[MusicXML import] add / change tablature testfile to cover higher fret numbers

• Jun 4, 2020 - 07:12
Reported version
3.4
Type
Functional
Frequency
Once
Severity
S4 - Minor
Reproducibility
Always
Status
active
Regression
No
Workaround
No
Project

The current MusicXML tablature testfiles provide insufficient coverage, see:
#287131: MusicXML import ignores string/fret
[#306201]