gtest discovery: increase timeout (needed by GH Actions Mac)

Tests/Functional/Core/Consistence/CMakeLists.txt

Tests/Functional/Core/CoreSpecial/CMakeLists.txt

Tests/Functional/Core/Fitting/CMakeLists.txt

Tests/Functional/Core/Std/CMakeLists.txt

Tests/Functional/Fit/Minimizer/CMakeLists.txt

Tests/Functional/GUI/Other/CMakeLists.txt

Tests/Functional/GUI/Std/CMakeLists.txt

Tests/Functional/GUI/Translate/CMakeLists.txt

Tests/Functional/Python/Std/CMakeLists.txt

Tests/UnitTests/Core/CMakeLists.txt

Tests/UnitTests/Fit/CMakeLists.txt

Tests/UnitTests/GUI/CMakeLists.txt

Tests/UnitTests/Numeric/CMakeLists.txt

auto/Wrap/libBornAgainCore.py

auto/Wrap/libBornAgainCore_wrap.cpp