[WIP] Fix langchain handler install (#9115)

* pin more packages

* update tiktoken

* Remove langchain

* Fix mysql connection status tracking (#9120)

* fix mysql connection status

* revert

* try different mysql image

* Add web default handler

* Add openai key to tests

* fix rag splitters

* Add debug

* remove random file (#9157)

* Prepare to rename default branch to "main" (#9089)

* update references to staging and stable branches

* Add branch rename notice to the readme

* fix rag splitters

* missed docs (#9158)

* merge and test file handler perm

* update dockerignore

* Remove debug

* fix langchain dep

mindsdb/integrations/handlers/langchain_embedding_handler/requirements.txt

@@ -1,2 +1,2 @@
-openai == 1.6.1
-tiktoken~=0.5.2
+openai==1.6.1
+tiktoken==0.5.2

mindsdb/integrations/handlers/langchain_handler/requirements.txt

@@ -1,8 +1,8 @@
-openai == 1.6.1
+openai==1.6.1
 wikipedia==1.4.0
-tiktoken~=0.5.2
+tiktoken==0.5.2
 anthropic==0.3.5
-langfuse  # Tracing
+langfuse==2.27.1  # Tracing
 litellm==1.35.0
 -r mindsdb/integrations/handlers/openai_handler/requirements.txt
 -r mindsdb/integrations/handlers/langchain_embedding_handler/requirements.txt

mindsdb/integrations/handlers/openai_handler/requirements.txt

@@ -1,2 +1,2 @@
 openai == 1.6.1
-tiktoken~=0.5.2
+tiktoken==0.5.2