chore(deps): update dependency astroid to v2.15.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
astroid	==2.15.7 -> ==2.15.8

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Release Notes

pylint-dev/astroid (astroid)

v2.15.8

Compare Source

=============================
Release date: 2023-09-26

• Fix a regression in 2.15.7 for unsubscriptable-object.

  Closes #​2305
  Closes pylint-dev/pylint#9069

• Fix a regression in 2.15.7 for unsubscriptable-object.

  Closes #​2305
  Closes pylint-dev/pylint#9069

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[codecov]

Codecov Report

Merging #197 (2ecf3d4) into main (5237e93) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #197   +/-   ##
=======================================
  Coverage   92.93%   92.93%           
=======================================
  Files          16       16           
  Lines         439      439           
=======================================
  Hits          408      408           
  Misses         31       31           

Flag	Coverage Δ
unittests	92.93% <ø> (ø)

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