Update php-http/psr7-integration-tests requirement from ^1.3.0 to ^1.5.0

Updates the requirements on [php-http/psr7-integration-tests](https://github.com/php-http/psr7-integration-tests) to permit the latest version.
- [Release notes](https://github.com/php-http/psr7-integration-tests/releases)
- [Changelog](https://github.com/php-http/psr7-integration-tests/blob/1.x/CHANGELOG.md)
- [Commits](php-http/psr7-integration-tests@1.3.0...1.5.0)

---
updated-dependencies:
- dependency-name: php-http/psr7-integration-tests
  dependency-version: 1.5.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

composer.json

@@ -44,7 +44,7 @@
         "adriansuter/php-autoload-override": "^1.4",
         "laminas/laminas-diactoros": "^3.1.0",
         "nyholm/psr7": "^1.8.1",
-        "php-http/psr7-integration-tests": "^1.3.0",
+        "php-http/psr7-integration-tests": "^1.5.0",
         "phpstan/phpstan": "^2.0",
         "phpunit/phpunit": "^9.6",
         "doctrine/instantiator": "^1.3.1",