Update matomo Docker tag to v5.0.3

This MR contains the following updates:

Package	Type	Update	Change
matomo		patch	5.0.2 -> 5.0.3
matomo	ironbank-docker	patch	5.0.2-fpm -> 5.0.3-fpm
matomo	stage	patch	5.0.2-fpm -> 5.0.3-fpm

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