Fix max tokens in LLM2Vec Models (#96)

- update max tokens for LLM2Vec models (b4e6a14f3f69d207ae910b9262232adee306a3ef)

app.py

@@ -721,12 +721,12 @@ EXTERNAL_MODEL_TO_SEQLEN = {
     "Cohere-embed-multilingual-light-v3.0": 512,
     "DanskBERT": 514,
     "LASER2": "N/A",
-    "LLM2Vec-Llama-supervised": 512,
-    "LLM2Vec-Llama-unsupervised": 512,
-    "LLM2Vec-Mistral-supervised": 512,
-    "LLM2Vec-Mistral-unsupervised": 512,
-    "LLM2Vec-Sheared-Llama-supervised": 512,
-    "LLM2Vec-Sheared-Llama-unsupervised": 512,    
+    "LLM2Vec-Llama-supervised": 4096,
+    "LLM2Vec-Llama-unsupervised": 4096,
+    "LLM2Vec-Mistral-supervised": 32768,
+    "LLM2Vec-Mistral-unsupervised": 32768,
+    "LLM2Vec-Sheared-Llama-supervised": 4096,
+    "LLM2Vec-Sheared-Llama-unsupervised": 4096,    
     "LaBSE": 512,
     "all-MiniLM-L12-v2": 512,
     "all-MiniLM-L6-v2": 512,