Update requirements.txt

requirements.txt

@@ -1,6 +1,5 @@
-flask>=2.2,<3.0
-gunicorn>=21.0
-pandas>=1.5,<2.3
-numpy>=1.23,<2.0
-scikit-learn>=1.2,<1.5
-joblib>=1.2
+flask
+gunicorn
+scikit-learn==1.6.1
+pandas
+joblib