Rename php-webdriver package

[OndraM]

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Php-webdriver package has been renamed and the original is now marked as abandoned.

[codecov-io]

Codecov Report

Merging #76 into 2.6.x will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              2.6.x      #76   +/-   ##
=========================================
  Coverage     64.74%   64.74%           
  Complexity      498      498           
=========================================
  Files            54       54           
  Lines          1804     1804           
=========================================
  Hits           1168     1168           
  Misses          636      636

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