Update dependency psr/http-message to v2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
psr/http-message	^1.0.1 -> ^2.0.0

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Release Notes

php-fig/http-message (psr/http-message)

v2.0

Compare Source

Added return types, see https://www.php-fig.org/psr/psr-7/meta/#​72-type-additions

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