Drop PHP 8.1, update dependency symfony/process to v7

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
symfony/process (source)	^6.4.2 -> ^7.0.2

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Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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Release Notes

symfony/process (symfony/process)

v7.0.2

Compare Source

Changelog (symfony/process@v7.0.1...v7.0.2)

• bug symfony/symfony#52864 [HttpClient][Mailer][Process] always pass microseconds to usleep as integers (@​xabbuh)

v7.0.0

Compare Source

Changelog (symfony/process@v7.0.0-RC2...v7.0.0)

• no significant changes

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⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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The artifact failure details are included below:

File name: composer.lock

Command failed: composer update symfony/process:7.0.2 --with-dependencies --ignore-platform-req='ext-*' --ignore-platform-req='lib-*' --no-ansi --no-interaction --no-scripts --no-autoloader --no-plugins
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires symfony/process ^7.0.2 -> satisfiable by symfony/process[v7.0.2].
    - symfony/process v7.0.2 requires php >=8.2 -> your php version (8.1.99; overridden via config.platform, actual: 8.1.27) does not satisfy that requirement.
  Problem 2
    - symfony/process v7.0.2 requires php >=8.2 -> your php version (8.1.99; overridden via config.platform, actual: 8.1.27) does not satisfy that requirement.
    - infection/infection 0.27.9 requires symfony/process ^5.4 || ^6.0 || ^7.0 -> satisfiable by symfony/process[v7.0.2].
    - infection/infection is locked to version 0.27.9 and an update of this package was not requested.

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

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