Expose a CLI option to set dependency-check version in use

[michalszelagsonos]

Given that 9.0.0 and 9.0.1 have a problem, specifically this one: jeremylong/DependencyCheck#6157 it seems prudent to expose a parameter to allow for pinning to a specific version. Currently, the code just checks for latest available and uses that which is a pretty risky proposition if there is a regression in a new release. Giving a user an option to set specific version seems like a very useful feature that favors stability. Users that just want to update to latest all the time can stick with current behavior

[centi]

Thank you for the PR>

[vincego]

Please be aware that this option doesn't work when binDir parent folder (defaults to ./dependency-check-bin) doesn't exist because cleanDir function won't create binDir recursively and fails with "ENOENT: no such file or directory, mkdir".