Bump interop integration tests to fix test failures on lowest

Signed-off-by: George Steel <george@net-glue.co.uk>

Author: gsteel

composer.json

@@ -45,7 +45,7 @@
         "ext-libxml": "*",
         "http-interop/http-factory-tests": "^0.9.0",
         "laminas/laminas-coding-standard": "~2.3.0",
-        "php-http/psr7-integration-tests": "^1.1",
+        "php-http/psr7-integration-tests": "^1.1.1",
         "phpspec/prophecy-phpunit": "^2.0",
         "phpunit/phpunit": "^9.1",
         "psalm/plugin-phpunit": "^0.17.0",