pinned regex to be python 3.14 compatible

pyproject.toml

@@ -20,7 +20,7 @@ dependencies = [
   "overrides==7.7.0",
   "python-dotenv==1.2.1",
   "mcp==1.26.0",
-  "flask==3.1.3",  # bumped from 3.1.1 for CVE fix (also fixes werkzeug alert)
+  "flask==3.1.3", # bumped from 3.1.1 for CVE fix (also fixes werkzeug alert)
   "sensai-utils==1.5.0",
   "pydantic==2.12.5",
   "types-pyyaml==6.0.12.20250516",
@@ -44,6 +44,7 @@ dependencies = [
   "python-multipart==0.0.22",
   "filelock==3.25.2",
   "cryptography==46.0.5",
+  "regex==2026.2.28",
 ]
 
 [[tool.uv.index]]