chore(deps): pin dependencies

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
behat/behat (source)	require-dev	pin	^3.8 -> 3.8.1
composer/installers (source)	require	pin	^1.8 -> 1.9.0
oscarotero/env	require	pin	^2.1 -> 2.1.0
phpstan/phpstan	require-dev	pin	^0.12.70 -> 0.12.70
povils/phpmnd	require-dev	pin	^2.3 -> 2.3.0
roots/bedrock-autoloader	require	pin	^1.0 -> 1.0.4
squizlabs/php_codesniffer	require-dev	pin	^3.5 -> 3.5.8
vlucas/phpdotenv	require	pin	^5.2 -> 5.2.0

:pushpin: Important: Renovate will wait until you have merged this Pin PR before creating any upgrade PRs for the affected packages. Add the preset :preserveSemverRanges to your config if you instead don't wish to pin dependencies.

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