fix: Update Showdown Package Locally to Resolve Bug15178

[Abdul-Microsoft]

Purpose

• This pull request includes a change to the src/frontend/wwwroot/task/employee.html file to update the source of the showdown.min.js script. The change modifies the script source from a URL to a local path.

• src/frontend/wwwroot/task/employee.html: Changed the src attribute of the showdown.min.js script from https://unpkg.com/showdown/dist/showdown.min.js to ../libs/showdown.min.js.

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

[github-actions]

🎉 This PR is included in version 1.3.0 🎉

The release is available on GitHub release

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