backport giskard

the new libraries 2.15.5 fails in Llama3.1 agent test.

Author: corradodebari

app/requirements.txt

@@ -14,7 +14,7 @@
 bokeh==3.6.1
 evaluate==0.4.3
 faiss-cpu==1.9.0
-giskard==2.15.5
+giskard==2.15.2
 IPython==8.29.0
 langchain-cohere==0.3.1
 langchain-community==0.3.7