chore: Update quivr-core and chainlit versions in requirements.txt (Q…

…uivrHQ#2839)

This pull request updates the versions of quivr-core and chainlit in the
requirements.txt file. The quivr-core version is changed from 0.0.8 to
0.0.8[base], and the chainlit version is changed from 1.1.306 to
1.1.306.

backend/core/examples/chatbot/requirements.txt

@@ -1,5 +1,2 @@
-quivr-core==0.0.8
-langchain-community==0.2.6
-faiss-cpu==1.8.0
-langchain-openai==0.1.14
+quivr-core[base]==0.0.8
 chainlit==1.1.306