Wali/fixing sample app vulnerabilities

[waliMSFT]

• [ ] The purpose of this PR is explained in this message or in an issue. If an issue please include a reference as #<issue_number>.
• [ ] Tests are included and/or updated for code changes.
• [ ] Proper license headers are included in each file.

Below are the npm vulnerabilities addressed by executing the npm audit fix command

1. https://devdiv.visualstudio.com/DevDiv/_componentGovernance/107100/alert/7042178?action=ContributedHub&controller=Apps&typeId=12073628
2. https://devdiv.visualstudio.com/DevDiv/_componentGovernance/107100/alert/7018469?typeId=8967954
3. https://devdiv.visualstudio.com/DevDiv/_componentGovernance/107100/alert/5897634?typeId=8967954
4. https://devdiv.visualstudio.com/DevDiv/_componentGovernance/107100/alert/6151997?typeId=8967954