chore(deps): update dependency flask to v3

pactflow-renovate-bot[bot] · web-flow · commit 8922082dc0b3 · 2025-06-24T04:53:10.000Z
diff --git a/requirements.txt b/requirements.txt
@@ -1,4 +1,4 @@
-Flask==2.2.5
+Flask==3.1.1
 pytest==6.2.5
 requests==2.32.2
 pact_python==2.2.2
