Update requirements.txt

requirements.txt

@@ -1,6 +1,6 @@
-ctranslate2==4.1.0
-spacy==3.7.4
-nltk==3.8.1
-jieba==0.42.1
-sacremoses==0.1.1
-subword_nmt==0.3.8
+ctranslate2
+spacy
+nltk
+jieba
+sacremoses
+subword_nmt