Update php Docker tag to v8.1.11

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
php	patch	8.1.7-fpm-alpine -> 8.1.11-fpm-alpine

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[pcit-ce[bot]]

Repo administrator can comment /LGTM or /LGTM <type>, I will merge this Pull_request.

/LGTM /LGTM rebase /LGTM squash

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This Comment has been generated by PCIT Bot.

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