Update dependency pytest to v9 [SECURITY] (#202)

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

Author: renovate[bot]

requirements_dev.txt

@@ -1,7 +1,7 @@
 bidict==0.23.1
 pika==1.3.2
 prometheus_client==0.21.0
-pytest==8.3.3
+pytest==9.0.3
 pytest-cov==6.0.0
 pytest-mock==3.14.0
 pytest-timeout==2.3.1