fix: update tiktoken version constraint to allow up to 0.12 (#3777)

Co-authored-by: Waleed Alzarooni <[email protected]>
Co-authored-by: Wendong-Fan <[email protected]>

Author: 3 people

pyproject.toml

@@ -22,7 +22,7 @@ keywords = [
 ]
 dependencies = [
     "mcp>=1.3.0",
-    "tiktoken>=0.7.0,<0.8",
+    "tiktoken>=0.7.0,<=0.12",
     "colorama>=0.4.6,<0.5",
     "jsonschema>=4,<5",
     "docstring-parser>=0.17.0,<0.18",