Bump phploc/phploc from 3.0.1 to 4.0.1

Bumps [phploc/phploc](https://github.com/sebastianbergmann/phploc) from 3.0.1 to 4.0.1.
- [Release notes](https://github.com/sebastianbergmann/phploc/releases)
- [Changelog](https://github.com/sebastianbergmann/phploc/blob/master/ChangeLog.md)
- [Commits](sebastianbergmann/phploc@3.0.1...4.0.1)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-preview[bot]

composer.json

@@ -24,7 +24,7 @@
         "symfony/debug": "^3.2",
         "phpmd/phpmd": "@stable",
         "squizlabs/php_codesniffer": "^2.8",
-        "phploc/phploc": "^3.0",
+        "phploc/phploc": "^4.0",
         "sebastian/phpcpd": "^3.0",
         "pdepend/pdepend": "^2.5"
     },