Remove version 0.3.1 of getrandom

[cakebaker]

This PR removes version 0.3.1 of getrandom as it is no longer necessary. As a side effect, two other dependencies are also removed.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.76%. Comparing base (1266b7f) to head (7ae5b5b).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #655   +/-   ##
=======================================
  Coverage   91.76%   91.76%           
=======================================
  Files          31       31           
  Lines        6203     6203           
  Branches      328      328           
=======================================
  Hits         5692     5692           
  Misses        390      390           
  Partials      121      121           

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