[Snyk] Security upgrade php from 8.1.6-apache to 8.1.20-apache

[tslmy]

This PR was automatically created by Snyk using the credentials of a real user.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Changes included in this PR

• Dockerfile

We recommend upgrading to php:8.1.20-apache, as this image has only 74 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Some of the most important vulnerabilities in your base image include:

Severity	Priority Score / 1000	Issue	Exploit Maturity
	714	Insufficient Verification of Data Authenticity SNYK-DEBIAN11-APACHE2-2863474	No Known Exploit
	714	Integer Overflow or Wraparound SNYK-DEBIAN11-APACHE2-2863497	No Known Exploit
	714	HTTP Request Smuggling SNYK-DEBIAN11-APACHE2-3355490	No Known Exploit
	714	HTTP Request Smuggling SNYK-DEBIAN11-APACHE2-3355490	No Known Exploit
	714	Integer Overflow or Wraparound SNYK-DEBIAN11-APR-3261105	No Known Exploit

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[sonarqubecloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
2 Security Hotspots
2 Code Smells

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