Update requirements.txt

requirements.txt

@@ -1,6 +1,7 @@
-gradio==4.19.2
-easyocr==1.7.1
-pdf2image==1.17.0
-huggingface-hub==0.21.4
-Pillow==10.2.0
-python-dotenv==1.0.1
+gradio>=4.19.2
+python-dotenv>=0.19.0
+Pillow>=8.0.0
+pdf2image>=1.16.0
+easyocr>=1.7.1
+huggingface-hub>=0.20.3
+poppler-utils>=0.1.0