Bump serialize-javascript in /src/SampleApps/SampleApp.Angular/ClientApp

Bumps [serialize-javascript](https://github.com/yahoo/serialize-javascript) from 7.1.1 to 7.1.2.
- [Release notes](https://github.com/yahoo/serialize-javascript/releases)
- [Commits](yahoo/serialize-javascript@v7.1.1...v7.1.2)

---
updated-dependencies:
- dependency-name: serialize-javascript
  dependency-version: 7.1.2
  dependency-type: indirect
...

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Author: dependabot[bot]