Use selenium 2 as the default version

[uuf6429]

I missed this in the original PR. This driver cannot work with Selenium 4 at all, so it makes sense to use a supported default version, if for anything to avoid confusing users.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.21%. Comparing base (4ad4a11) to head (1357fcc).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #410   +/-   ##
=========================================
  Coverage     86.21%   86.21%           
  Complexity      185      185           
=========================================
  Files             1        1           
  Lines           515      515           
=========================================
  Hits            444      444           
  Misses           71       71           

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[aik099]

@uuf6429 , inform me once PR is ready (I hope any PR's in non-Draft status are ready for review).

[uuf6429]

@aik099 It's ready now.

[aik099]

Merged. Thanks @uuf6429 .