fix(deps): update dependency nyholm/psr7 to ^1.6.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
nyholm/psr7 (source)	require	minor	^1.5.1 -> ^1.6.0

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Release Notes

Nyholm/psr7

v1.6.0

Compare Source

Changed

• Seek to the begining of the string when using Stream::create()
• Populate ServerRequest::getQueryParams() on instantiation
• Encode reserved characters in userinfo in Uri
• Normalize leading slashes for Uri::getPath()
• Make Stream's constructor public
• Add some missing type checks on arguments

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