chore(deps): Bump composer/installers from 1.6.0 to 1.7.0 (#462)

Bumps [composer/installers](https://github.com/composer/installers) from 1.6.0 to 1.7.0.
- [Release notes](https://github.com/composer/installers/releases)
- [Changelog](https://github.com/composer/installers/blob/master/CHANGELOG.md)
- [Commits](composer/installers@v1.6.0...v1.7.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

composer.json

@@ -31,7 +31,7 @@
   ],
   "require": {
     "php": ">=7.1",
-    "composer/installers": "^1.4",
+    "composer/installers": "^1.7",
     "vlucas/phpdotenv": "^3.4.0",
     "oscarotero/env": "^1.2.0",
     "roots/wordpress": "5.2.2",