Update dependencies versions

[Kannen]

Update crate dependencies versions and relax required versions.

Without those update, this crate will soon not compile anymore.

Thank you for this crate, I use it in production, it is very usefull :).

[pengowen123]

Thanks for the PR! I'm glad you found it useful :).

I have two comments:

• The latest plotters seems to require the ttf feature to render text. Can you enable it?

• Removing the minor/patch versions shouldn't be necessary, as Cargo will use later versions automatically as long as they are semver-compatible. The library might be incompatible with older dependency versions though, so it would be safest to keep the minor/patch requirements. Can you add them back?

[Kannen]

Oh! Thank you for the help. I added back the minor/patch version and the ttf plotters feature!

[pengowen123]

Thanks!