Update requirements.txt

requirements.txt

@@ -1,9 +1,4 @@
-groq==0.9.0
-gradio==4.24.0
-python-docx==1.1.0
-pypdf==4.2.0
-requests==2.31.0
-python-dotenv==1.0.0
-json5==0.9.14
-pillow==10.2.0
-serpapi==1.3.0
+gradio>=4.0
+requests>=2.31
+python-docx>=0.8.11
+pypdf>=3.0.0