Fix: Compile error because of new version of "calc" crate.

Before one could not install Ion shell locally.

Had to delete/rest Cargo.lock file so new status of "calc" crate is recognized by the compiler aka showing the error.

Pin pointed "calc" crate version on latest commit for stability

Note: the job redox seems to fail to some linking error. Same seems to happen on other projects. See a job output of the project termion: https://gitlab.redox-os.org/redox-os/termion/-/jobs/42969