[Backport maintenance/4.0.x] Suppress SyntaxWarnings for Python 3.14 when parsing modules

[pylint-backport]

Backport 8c4da6a from #2853.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (maintenance/4.0.x@bb38aa4). Learn more about missing BASE report.

Additional details and impacted files

@@                 Coverage Diff                  @@
##             maintenance/4.0.x    #2854   +/-   ##
====================================================
  Coverage                     ?   93.37%           
====================================================
  Files                        ?       92           
  Lines                        ?    11150           
  Branches                     ?        0           
====================================================
  Hits                         ?    10411           
  Misses                       ?      739           
  Partials                     ?        0           

Flag	Coverage Δ
linux	93.23% <100.00%> (?)
pypy	93.37% <100.00%> (?)
windows	93.35% <100.00%> (?)

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Files with missing lines	Coverage Δ
astroid/builder.py	95.17% <100.00%> (ø)

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