message: travis: bump xcode to 11.4
diff: @@ -110,7 +110,7 @@ matrix:
  - env: CMAKE_BUILD_TYPE=Debug CMAKE_CXX_FLAGS=-fsanitize=address,undefined
  os: osx
  - osx_image: xcode11.3
  + osx_image: xcode11.4
  addons: &mac
  homebrew:
  packages:
  @@ -121,5 +121,5 @@ matrix:
  - env: CMAKE_BUILD_TYPE=Release
  os: osx
  - osx_image: xcode11.3
  + osx_image: xcode11.4
  addons: *mac
  