Update dependency mockery/mockery to ^1.6.7

Author: renovate[bot]

composer.json

@@ -15,7 +15,7 @@
     "icanhazstring/composer-unused": "^0.8.11",
     "infection/infection": "^0.27.0",
     "maglnet/composer-require-checker": "^4.8.0",
-    "mockery/mockery": "^1.6.6",
+    "mockery/mockery": "^1.6.7",
     "nunomaduro/collision": "^7.10.0",
     "orklah/psalm-insane-comparison": "^2.2.0",
     "php-coveralls/php-coveralls": "^2.7.0",