text: Title: Unable to upload a pdf file of size 2.92MB
  Body: ### Describe the bug
  
   `Error
  HTTP 413:
  413 Request Entity Too Large
  nginx/1.18.0`
  
  I am using google colab with to run gradio interface and I am trying to upload a file of size 2.92 MB. I am seeing this error now, never seen this error. I have been using the same code, same gradio interface and same file.
  
  Why am I seeing this error today??
  
  ### Have you searched existing issues?  🔎
  
  - [x] I have searched and found no existing issues
  
  ### Reproduction
  
  ```python
  import gradio as gr
  
  #Gradio interface
  with gr.Blocks(title=" OCR") as demo:
      gr.Markdown("#  OCR")
      gr.Markdown("Upload a PDF and its ground truth JSON file to convert content to structured JSON with lexicon correction and view performance metrics.")
      with gr.Row():
          pdf_input = gr.File(label="Upload PDF", file_types=[".pdf"])
          gt_json_input = gr.File(label="Upload Ground Truth JSON", file_types=[".json"])
          submit_btn = gr.Button("Process")
      with gr.Row():
          json_output = gr.Textbox(label="Corrected JSON Output", lines=10)
          cer_output = gr.Textbox(label="Character Error Rate (CER)", lines=1)
          accuracy_output = gr.Textbox(label="Field-Level Accuracy", lines=1)
      submit_btn.click(fn=process_pdf, inputs=[pdf_input, gt_json_input], outputs=[json_output, cer_output, accuracy_output])
  
  logging.info("Launching Gradio interface")
  demo.launch(share=True)
  ```
  
  
  ### Screenshot
  
  ![Image](https://github.com/user-attachments/assets/3273884b-3c11-4ed1-99e2-bc8b5a1ff229)
  
  ![Image](https://github.com/user-attachments/assets/d94500a5-1bb0-42e6-8fc8-e1d5c7390b1e)
  
  ### Logs
  
  ```shell
  not getting any errors while debugging
  ```
  
  ### System Info
  
  ```shell
  Gradio Environment Information:
  ------------------------------
  Operating System: Linux
  gradio version: 5.20.0
  gradio_client version: 1.7.2
  
  ------------------------------------------------
  gradio dependencies in your environment:
  
  aiofiles: 23.2.1
  anyio: 3.7.1
  audioop-lts is not installed.
  fastapi: 0.115.11
  ffmpy: 0.5.0
  gradio-client==1.7.2 is not installed.
  groovy: 0.1.2
  httpx: 0.28.1
  huggingface-hub: 0.28.1
  jinja2: 3.1.5
  markupsafe: 2.1.5
  numpy: 1.26.4
  orjson: 3.10.15
  packaging: 24.2
  pandas: 2.2.2
  pillow: 11.1.0
  pydantic: 2.10.6
  pydub: 0.25.1
  python-multipart: 0.0.20
  pyyaml: 6.0.2
  ruff: 0.9.9
  safehttpx: 0.1.6
  semantic-version: 2.10.0
  starlette: 0.46.0
  tomlkit: 0.13.2
  typer: 0.15.1
  typing-extensions: 4.12.2
  urllib3: 2.3.0
  uvicorn: 0.34.0
  authlib; extra == 'oauth' is not installed.
  itsdangerous; extra == 'oauth' is not installed.
  
  
  gradio_client dependencies in your environment:
  
  fsspec: 2024.10.0
  httpx: 0.28.1
  huggingface-hub: 0.28.1
  packaging: 24.2
  typing-extensions: 4.12.2
  websockets: 14.2
  ```
  
  ### Severity
  
  Blocking usage of gradio