Update php Docker tag

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	Pending
php	final	minor	8.4-alpine → 8.5-alpine
php	final	minor	8.3-alpine → 8.5-alpine
php	final	minor	8.2-alpine → 8.5-alpine
php	final	minor	8.1-alpine → 8.5-alpine
php	final	minor	8.0-apache → 8.1-apache	8.5-apache (+3)
php	final	minor	8.0-alpine → 8.5-alpine
php	final	major	7.4-apache → 8.1-apache	8.5-apache (+3)
php	final	major	7.4-alpine → 8.5-alpine
php	final	major	5.6-apache → 8.1-apache	8.5-apache (+3)

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[guillaume-sainthillier]

@copilot can you make renovate stop trying to do major docker tag update for this project?

[Copilot]

@guillaume-sainthillier I've opened a new pull request, #38, to work on those changes. Once the pull request is ready, I'll request review from you.