chore(deps): update dependency pytest to v9.1.1 (#52)

Ref: PACT-445

Co-authored-by: pactflow-renovate-bot[bot] <186667433+pactflow-renovate-bot[bot]@users.noreply.github.com>

Author: pactflow-renovate-bot[bot]

requirements.txt

@@ -1,4 +1,4 @@
 Flask==3.1.3
-pytest==9.1.0
+pytest==9.1.1
 requests==2.34.2
 pact_python==2.3.3