Update phpstan/phpstan-mockery requirement from 0.12.13 to 0.12.14

Updates the requirements on [phpstan/phpstan-mockery](https://github.com/phpstan/phpstan-mockery) to permit the latest version.
- [Release notes](https://github.com/phpstan/phpstan-mockery/releases)
- [Commits](phpstan/phpstan-mockery@0.12.13...0.12.14)

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

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

composer.json

@@ -29,7 +29,7 @@
         "phpstan/phpstan-nette": "0.12.21",
         "nepada/phpstan-nette-tester": "0.3.1",
         "spaze/phpstan-disallowed-calls": "1.4.0",
-        "phpstan/phpstan-mockery": "0.12.13",
+        "phpstan/phpstan-mockery": "0.12.14",
         "php-parallel-lint/php-parallel-lint": "1.3.0",
         "nepada/coding-standard": "7.4.0",
         "nette/bootstrap": "^3.0@dev",