Merge #254

254: update dependencies / lockfile r=stlankes a=striezel

* updating proc-macro2 v1.0.26 -> v1.0.27
* updating raw-cpuid v9.0.0 -> v9.1.1
* updating syn v1.0.72 -> v1.0.73


`proc-macro2` and `syn` should be painless, because these are only patch version updates.

`raw-cpuid` should be no hassle, too, if it follows semver - and its readme says it does. :)

Co-authored-by: Dirk Stolle <striezel-dev@web.de>
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