chore(deps): update dependency pytest to v9 (#407)

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

Author: renovate[bot]

pyproject.toml

@@ -41,7 +41,7 @@ version-file = "irclib/_version.py"
 [tool.hatch.envs.default]
 dependencies = [
     "coverage[toml]==7.12.0",
-    "pytest==8.4.2",
+    "pytest==9.0.1",
     "irc-parser-tests==0.0.4",
     "pre-commit==4.5.0",
     "mypy==1.18.2",
@@ -64,7 +64,7 @@ default-args = ["tests", "irclib"]
 extra-args = ["-vv", "--junitxml=junit.xml"]
 extra-dependencies = [
     "coverage[toml]==7.12.0",
-    "pytest==8.4.2",
+    "pytest==9.0.1",
     "irc-parser-tests==0.0.4",
 ]
 post-install-commands = []