Update mockery/mockery requirement from ^1.4 to ^1.5

Updates the requirements on [mockery/mockery](https://github.com/mockery/mockery) to permit the latest version.
- [Release notes](https://github.com/mockery/mockery/releases)
- [Changelog](https://github.com/mockery/mockery/blob/master/CHANGELOG.md)
- [Commits](mockery/mockery@1.4.0...1.5.0)

---
updated-dependencies:
- dependency-name: mockery/mockery
  dependency-type: direct:development
...

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

composer.json

@@ -32,7 +32,7 @@
     "require-dev": {
         "chelout/laravel-relationship-events": "^1.4",
         "laravel/legacy-factories": "^1.3",
-        "mockery/mockery": "^1.4",
+        "mockery/mockery": "^1.5",
         "orchestra/database": "^5.0|^6.0",
         "orchestra/testbench": "^6.24.0"
     },