feat: symfony 6 support (#172)

* chore: update symfony to v6

* chore: also allow symfony 5

Co-authored-by: Kieran <[email protected]>

* chore: revert to symfony 5 interfaces

Co-authored-by: Kieran <[email protected]>

* chore: remove unused interfaces

---------

Co-authored-by: Kieran <[email protected]>

Author: ju5t

composer.json

@@ -17,11 +17,11 @@
     "kevinrob/guzzle-cache-middleware": "^4.0",
     "phpdocumentor/reflection-docblock": "^5.2",
     "psr/http-message": "^1.0",
-    "symfony/config": "^5.1",
-    "symfony/dependency-injection": "^5.1",
-    "symfony/property-access": "^5.1",
-    "symfony/serializer": "^5.1",
-    "symfony/yaml": "^5.1"
+    "symfony/config": "^5.1|^6.2",
+    "symfony/dependency-injection": "^5.1|^6.2",
+    "symfony/property-access": "^5.1|^6.2",
+    "symfony/serializer": "^5.1|^6.2",
+    "symfony/yaml": "^5.1|^6.2"
   },
   "require-dev": {
     "brianium/paratest": "^4.0|^5.0|^6.0",