Harfbuzz GCC warning on develop

Development
1

I’m seeing a warning building with GCC11 on develop, due to the recent harfbuzz update:

juce-src/modules/juce_graphics/fonts/harfbuzz/OT/Var/VARC/../../../hb-open-type.hh: In static member function ‘static unsigned int OT::TupleValues::encode_value_run_as_longs(unsigned int&, hb_array_t<char>, hb_array_t<const int>)’:
juce-src/modules/juce_graphics/fonts/harfbuzz/OT/Var/VARC/../../../hb-open-type.hh:1684:33: error: overflow in conversion from ‘int’ to ‘char’ changes value from ‘255’ to ‘'\37777777777'’ [-Werror=overflow]
 1684 |       *it++ = (VALUES_ARE_LONGS | 63);
      |               ~~~~~~~~~~~~~~~~~~^~~~~

Here’s an example run which breaks when COMPILE_WARNING_AS_ERROR is set . It looks like master builds fine.

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