Suppress SyntaxWarnings for Python 3.14 when parsing modules

[cdce8p]

Description

Similar to #2386
Python 3.14 added a few more syntax warnings for return in finally PEP 765 which are emitted during AST parsing. Similarly the message for invalid escape sequence changed slightly so the regex didn't match anymore.

# test.py
def func() -> None:
    try:
        x = 1/0
    finally:
        return None  # return in finally

"Hello \P world"  # invalid escape sequence

Python 3.13

# python3.13 test.py
test.py:7: SyntaxWarning: invalid escape sequence '\P'
  "Hello \P world"  # invalid escape sequence

Python3.13

# python3.14 test.py
test.py:7: SyntaxWarning: "\P" is an invalid escape sequence. Such sequences will not work in the future. Did you mean "\\P"? A raw string is also an option.
  "Hello \P world"  # invalid escape sequence
test.py:5: SyntaxWarning: 'return' in a 'finally' block
  return None  # return in finally

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.33%. Comparing base (7fce264) to head (911532a).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2853   +/-   ##
=======================================
  Coverage   93.33%   93.33%           
=======================================
  Files          92       92           
  Lines       11168    11170    +2     
=======================================
+ Hits        10424    10426    +2     
  Misses        744      744           

Flag	Coverage Δ
linux	93.20% <100.00%> (+<0.01%)	⬆️
pypy	93.33% <100.00%> (+<0.01%)	⬆️
windows	93.32% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
astroid/builder.py	95.17% <100.00%> (+0.04%)	⬆️

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[Pierre-Sassoulas]

Great !