[Bugfix] Fix package discovery in sub-packages

Author: lindyhopchris

CHANGELOG.md

@@ -31,6 +31,7 @@ classes you are retaining.
 - [#3](https://github.com/laravel-json-api/laravel/issues/3)
   Example server registration in the published configuration file prevented developer from creating
   a `v1` server after adding this package to their Laravel application.
+- Package discovery for sub-packages that have service providers now works correctly.
 
 ### Removed
 - **BREAKING** The `Arr` schema field has been removed - use the new `ArrayList` or `ArrayHash`

composer.json

@@ -29,12 +29,12 @@
         "laravel-json-api/eloquent": "^1.0.0-alpha.2",
         "laravel-json-api/encoder-neomerx": "^1.0.0-alpha.2",
         "laravel-json-api/exceptions": "^1.0.0-alpha.1",
-        "laravel-json-api/spec": "^1.0.0-alpha.1",
-        "laravel-json-api/validation": "^1.0.0-alpha.1",
+        "laravel-json-api/spec": "^1.0.0-alpha.2",
+        "laravel-json-api/validation": "^1.0.0-alpha.2",
         "laravel/framework": "^8.0"
     },
     "require-dev": {
-        "laravel-json-api/testing": "^1.0@alpha",
+        "laravel-json-api/testing": "^1.0.0-alpha.1",
         "orchestra/testbench": "^6.9",
         "phpunit/phpunit": "^9.5"
     },