fix(deps): update composer dependencies

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
wpackagist-plugin/fluentform (source)	6.0.3 -> 6.0.4
wpackagist-plugin/polylang (source)	3.7.1 -> 3.7.2

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This MR has been generated by Renovate Bot.

requested review from @crdeoliv

mentioned in issue #42

added 3 commits

• 0e7ae581...db87e250 - 2 commits from branch mvp
• 762edfc9 - fix(deps): update composer dependencies

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