Upgrade dependencies

[alexliesenfeld]

• Upgrade all dependencies.
• Fixes a compile time issue originating from breaking changes in regex v1.9.0
• Upgrades the Docker base image

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (62a648b) 79.79% compared to head (21e1869) 79.79%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #86   +/-   ##
=======================================
  Coverage   79.79%   79.79%           
=======================================
  Files          19       19           
  Lines        1336     1336           
=======================================
  Hits         1066     1066           
  Misses        270      270           

Impacted Files	Coverage Δ
src/server/mod.rs	83.89% <ø> (ø)

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