fix(deps): update dependency duckduckgo-search to v8

Author: renovate[bot]

pyproject.toml

@@ -7,7 +7,7 @@ requires-python = ">=3.12"
 
 dependencies = [
     "click>=8.2.1",
-    "duckduckgo-search==6.4.2",
+    "duckduckgo-search==8.1.1",
     "openai==1.101.0",
     "pangea-sdk>=6.4.0",
     "pydantic>=2.11.7",