Build fails on macOS 14

[volkm]

The build currently fails on macos-14 with the following error:

/Users/runner/work/stormpy/stormpy/build/cp314-cp314-macosx_14_0_arm64/_deps/storm-src/resources/3rdparty/exprtk/exprtk.hpp:4823:17: error: missing 'typename' prior to dependent type name 'std::vector<type_store<T>>::const_iterator'
           inline std::vector<type_store>::const_iterator begin() const
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                  typename
  /Users/runner/work/stormpy/stormpy/build/cp314-cp314-macosx_14_0_arm64/_deps/storm-src/resources/3rdparty/exprtk/exprtk.hpp:4828:17: error: missing 'typename' prior to dependent type name 'std::vector<type_store<T>>::const_iterator'
           inline std::vector<type_store>::const_iterator end() const
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                  typename
  /Users/runner/work/stormpy/stormpy/build/cp314-cp314-macosx_14_0_arm64/_deps/storm-src/resources/3rdparty/exprtk/exprtk.hpp:4833:17: error: missing 'typename' prior to dependent type name 'std::vector<type_store<T>>::iterator'
           inline std::vector<type_store>::iterator begin()
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                  typename
  /Users/runner/work/stormpy/stormpy/build/cp314-cp314-macosx_14_0_arm64/_deps/storm-src/resources/3rdparty/exprtk/exprtk.hpp:4838:17: error: missing 'typename' prior to dependent type name 'std::vector<type_store<T>>::iterator'
           inline std::vector<type_store>::iterator end()
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                  typename
  4 errors generated.

This is triggered because the latest Github image uses Clang 15.0.7 instead of AppleClang 15.0.0.15000309. This should be reverted by Github by going to older images, see actions/runner-images#13827.

[ArashPartow]

Looks like you're using an old version of ExprTk. probably best to upgrade.

[volkm]

Thanks for the hint. We are indeed using an older version and we updated it now.