feat: reduce dependencies contraints

motivated by this issue: #47

in short: We don't want to restrict users from using Tryceratops
because some other lib bumped its major version (e.g. Rich)

by reading https://iscinumpy.dev/post/bound-version-constraints/
it got clear that Tryceratops should be more permissive

we're keeping dev dependencies as is since they should be installed
only locally for developmemnt purposes