chore(deps): pin php docker tag

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
php	final	pin	7.3-fpm-alpine -> bdd5fd3

:pushpin: Important: Renovate will wait until you have merged this Pin PR before creating any upgrade PRs for the affected packages. Add the preset :preserveSemverRanges your config if you instead don't wish to pin dependencies.

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