fix: Update dependency versions in pyproject.toml

Bump authlib to >=1.6.6 and mcp to >=1.23.0.

Co-authored-by: George Weale <gweale@google.com>
PiperOrigin-RevId: 858728187

Author: GWeale

pyproject.toml

@@ -28,7 +28,7 @@ dependencies = [
   "PyYAML>=6.0.2, <7.0.0",                                   # For APIHubToolset.
   "aiosqlite>=0.21.0",                                       # For SQLite database
   "anyio>=4.9.0, <5.0.0",                                    # For MCP Session Manager
-  "authlib>=1.5.1, <2.0.0",                                  # For RestAPI Tool
+  "authlib>=1.6.6, <2.0.0",                                  # For RestAPI Tool
   "click>=8.1.8, <9.0.0",                                    # For CLI tools
   "fastapi>=0.115.0, <0.124.0",                              # FastAPI framework
   "google-api-python-client>=2.157.0, <3.0.0",               # Google API client discovery
@@ -46,7 +46,7 @@ dependencies = [
   "google-genai>=1.56.0, <2.0.0",                            # Google GenAI SDK
   "graphviz>=0.20.2, <1.0.0",                                # Graphviz for graph rendering
   "jsonschema>=4.23.0, <5.0.0",                              # Agent Builder config validation
-  "mcp>=1.10.0, <2.0.0",                                     # For MCP Toolset
+  "mcp>=1.23.0, <2.0.0",                                     # For MCP Toolset
   "opentelemetry-api>=1.37.0, <=1.37.0",                     # OpenTelemetry - limit upper version for sdk and api to not risk breaking changes from unstable _logs package.
   "opentelemetry-exporter-gcp-logging>=1.9.0a0, <2.0.0",
   "opentelemetry-exporter-gcp-monitoring>=1.9.0a0, <2.0.0",