Multiple uses of deprecated `const ReferenceElement &`
Currently, the tests spit out multiple warnings on the deprecated conversion
operator const Dune::Geo::DeprecatedReferenceElement<double, 3> &
being used:
dune/localfunctions/whitney/edges0.5/common.hh
dune/localfunctions/rannacherturek/rannachertureklocalinterpolation.hh