Update jangregor/phpstan-prophecy requirement from ^1.0.0 to ^1.0.2

Updates the requirements on [jangregor/phpstan-prophecy](https://github.com/Jan0707/phpstan-prophecy) to permit the latest version.
- [Release notes](https://github.com/Jan0707/phpstan-prophecy/releases)
- [Changelog](https://github.com/Jan0707/phpstan-prophecy/blob/master/CHANGELOG.md)
- [Commits](Jan0707/phpstan-prophecy@1.0.0...1.0.2)

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

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

composer.json

@@ -30,7 +30,7 @@
         "slim/slim": "^4.12"
     },
     "require-dev": {
-        "jangregor/phpstan-prophecy": "^1.0.0",
+        "jangregor/phpstan-prophecy": "^1.0.2",
         "phpspec/prophecy-phpunit": "^2.2",
         "phpstan/extension-installer": "^1.3.1",
         "phpstan/phpstan": "^1.10",