Release 1.7.7 and current build broken on OSX 11.6.8

[maybites]

when issuing folloring command:

/Applications/UltraGrid/continuous/uv-qt.app/Contents/MacOS/uv -t testcard:80:60:1:UYVY -d gl

I get:

dyld: Symbol not found: __ZNKSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE3strEv
  Referenced from: /Applications/UltraGrid/continuous/uv-qt.app/Contents/MacOS/../libs/libopencv_core.4.6.0.dylib (which was built for Mac OS X 12.0)
  Expected in: /usr/lib/libc++.1.dylib

zsh: abort      /Applications/UltraGrid/continuous/uv-qt.app/Contents/MacOS/uv -t  -d gl

I get the same error when using current 1.7.7.

Plus:

In both cases double clicking uv-qt.app crashes, saying:

Ultragrid crashes when invoked without arguments!

[MartinPulec]

Confirmed, GitHub has switched the latest macOS bild runners to 12 Monterey which made the builds incompatible with version 11 and lower.

I've switched it back to 11 so it now works with macOS 11.x again (both continuous and 1.7.7; tested on macOS 11.7.1). (For more ancient macOS version there is designated the alternative macOS build.)

[maybites]

I can confirm the fix. Thanks!