[Security] Bump graphql-playground-html from 1.6.19 to 1.6.25
[Security] Bump graphql-playground-html from 1.6.19 to 1.6.25

Bumps [graphql-playground-html](https://github.com/graphcool/graphql-playground) from 1.6.19 to 1.6.25. **This update includes a security fix.**
- [Release notes](https://github.com/graphcool/graphql-playground/releases)
- [Commits](https://github.com/graphcool/graphql-playground/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
holdonnn/holdonnn.github.io,holdonnn/holdonnn.github.io