Fix unmet peer dependency issue

[justinallenmarsh]

This error is occurring during the build of all apps that depend on shimmer. I think some dependencies need to be updated.

#17 10.83 warning " > @nerdgeschoss/shimmer@0.0.31" has unmet peer dependency "classnames@^2.3.2".
#17 10.83 warning " > @nerdgeschoss/shimmer@0.0.31" has unmet peer dependency "react@^17.0.1".
#17 10.83 warning " > @nerdgeschoss/shimmer@0.0.31" has unmet peer dependency "react-dom@^17.0.1".