Merge branch 'fix/hybrid-depr-warn' into 'master'

Fix Dune::Hybrid deprecation warnings

Closes #872

See merge request !2054

(cherry picked from commit 08fbf362)

91009518 [multidomain][fvassembler] Fix Dune::Hybrid deprecation warnings
48ad9e5c [linear][matrixconverter] Fix Dune::Hybrid deprecation warning
d296a126 [matrixconverter] Improve readability by using capture default
cefe45cd [matrixconverter] Remove unused includes