Use stable phpunit-bridge version

alcaeus · alcaeus · commit 931f3b359ec7 · 2021-01-20T13:14:35.000+01:00
diff --git a/composer.json b/composer.json
@@ -18,7 +18,7 @@
     },
     "require-dev": {
         "squizlabs/php_codesniffer": "^3.5, <3.5.5",
-        "symfony/phpunit-bridge": "5.x-dev"
+        "symfony/phpunit-bridge": "^5.2"
     },
     "autoload": {
         "psr-4": { "MongoDB\\": "src/" },
