chore: Fixed security vulnerability

[Kanchan-Microsoft]

Purpose

This pull request includes a small update to the PlanDataService regex patterns to handle escaped characters more accurately, and a minor dependency version bump in the backend.

Regex improvements in PlanDataService:

• Improved the regex for extracting facts and question fields to better handle escaped quotes and characters, ensuring more robust parsing of string values in PlanDataService.tsx.

Dependency update:

• Updated the python-multipart dependency from version 0.0.17 to 0.0.18 in pyproject.toml for improved stability and compatibility.

Does this introduce a breaking change?

• Yes
• No

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information