Update phpstan/phpstan requirement from ^0.12.14 to ^0.12.14 || ^1.0.0 (

#40)

Updates the requirements on [phpstan/phpstan](https://github.com/phpstan/phpstan) to permit the latest version.
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Commits](phpstan/phpstan@0.12.14...1.0.0)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

composer.json

@@ -18,7 +18,7 @@
         "psr/http-message": "^1.0"
     },
     "require-dev": {
-        "phpstan/phpstan": "^0.12.14",
+        "phpstan/phpstan": "^0.12.14 || ^1.0.0",
         "phpunit/phpunit": "^7.5 || ^8.0 || ^9.0",
         "squizlabs/php_codesniffer": "^3.5"
     },