auth0-php-web-app issues

Invalid state

2

### Checklist - [X] I have looked into the [Readme](https://github.com/auth0-samples/auth0-php-web-app/tree/main/app#readme) and have not found a suitable solution or answer. - [X] I have searched the [issues](https://github.com/auth0-samples/auth0-php-web-app/issues) and have not found...

ihabkhaled

Update codeowner file with new GitHub team name

stevenwong-okta

Add encouragement message to CONTRIBUTING.md

Will All have to learn

Wizzyb22

chore(ci): Remove Semgrep GHA Workflow

Semgrep is Okta's static application security testing tool. It was previously recommended to add Semgrep directly into CI/CD pipelines or workflows. However, the ProdSec team has enhanced the tooling, and...

eduardoboronat-okta