Update dependency pytest to v8 (#22)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pyproject.toml

@@ -53,7 +53,7 @@ mkdocs-material = ">=9.1.16"
 mike = ">=2.0.0"
 mypy = ">=0.990"
 pymdown-extensions = ">=10.0.1"
-pytest = "^7.2.0"
+pytest = "^8.0.0"
 pytest-asyncio = ">=0.20.3"
 pytest-cov = ">=4.0.0"
 pytest-factoryboy = ">=2.5.0"