Update symfony packages to v8 (major)

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This PR contains the following updates:

Package	Change	Age	Confidence
symfony/finder (source)	^5.3 | ^6.0 | ^7.0 -> ^5.3 | ^6.0 | ^7.0 || 8.0.0
symfony/process (source)	^5.4 | ^6.0 | ^7.0 -> ^5.4 | ^6.0 | ^7.0 || 8.0.0
symfony/yaml (source)	^2.3 | ^3.0 | ^4.0 | ^5.0 | ^6.0 | ^7.0 -> ^2.3 | ^3.0 | ^4.0 | ^5.0 | ^6.0 | ^7.0 || 8.0.0

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Warning

Some dependencies could not be looked up. Check the warning logs for more information.

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Release Notes

symfony/finder (symfony/finder)

v8.0.0

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symfony/process (symfony/process)

v8.0.0

Compare Source

symfony/yaml (symfony/yaml)

v8.0.0

Compare Source

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