Update dependency spatie/array-to-xml to v3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
spatie/array-to-xml	require	major	^2.16 -> 3.0.0

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Release Notes

spatie/array-to-xml

v3.0.0

Compare Source

• require PHP 8+
• drop support for PHP 7.x
• convert syntax to PHP 8

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