Update PHP dependencies
```
Installing dependencies from lock file (including require-dev)
Package operations: 3 installs, 7 updates, 0 removals
- Downloading nikic/php-parser (v5.1.0)
- Downloading phpunit/phpunit (9.6.20)
- Upgrading squizlabs/php_codesniffer (3.7.2 => 3.8.1): Extracting archive
dealerdirect/phpcodesniffer-composer-installer contains a Composer plugin which is currently not in your allow-plugins config. See https://getcomposer.org/allow-plugins
Do you trust "dealerdirect/phpcodesniffer-composer-installer" to execute code and wish to enable it now? (writes "allow-plugins" to composer.json) [y,n,d,?] y
- Installing dealerdirect/phpcodesniffer-composer-installer (v1.0.0): Extracting archive
- Upgrading symfony/polyfill-php80 (v1.29.0 => v1.30.0): Extracting archive
- Installing phpcsstandards/phpcsutils (1.0.9): Extracting archive
- Installing phpcsstandards/phpcsextra (1.1.2): Extracting archive
- Upgrading composer/semver (3.3.2 => 3.4.0): Extracting archive
- Upgrading mediawiki/mediawiki-codesniffer (v42.0.0 => v43.0.0): Extracting archive
- Upgrading nikic/php-parser (v5.0.2 => v5.1.0): Extracting archive
- Upgrading myclabs/deep-copy (1.11.1 => 1.12.0): Extracting archive
- Upgrading phpunit/phpunit (9.6.16 => 9.6.20): Extracting archive
Generating autoload files
```
Bug: https://phabricator.wikimedia.org/T369065
d8da35a6c0