Fix XmlLintTask error handler

[jawira]

Before php 7.2, the callback passed to set_error_handler() received 5 arguments.
Starting php 7.2 the fifth argument is deprecated.
In php 8 the callback only accepts 4 arguments.

closes #1598

[codecov]

Codecov Report

Merging #1599 (2900110) into main (5b8346f) will not change coverage.
The diff coverage is 0.00%.

@@            Coverage Diff            @@
##               main    #1599   +/-   ##
=========================================
  Coverage     56.78%   56.78%           
  Complexity     6914     6914           
=========================================
  Files           354      354           
  Lines         16742    16742           
=========================================
  Hits           9507     9507           
  Misses         7235     7235           

Impacted Files	Coverage Δ	Complexity Δ
src/Phing/Task/System/XmlLintTask.php	64.19% <0.00%> (ø)	31.00 <1.00> (ø)

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