Add support for doctrine/annotations 2.0

Author: alexander-schranz

composer.json

@@ -21,7 +21,7 @@
         "symfony/stopwatch": "^2.8|^3.0|^4|^5|^6",
         "symfony/templating": "^2.8|^3.0|^4|^5|^6",
         "symfony/asset": "^2.8|^3.0|^4|^5|^6",
-        "doctrine/annotations": "~1.2",
+        "doctrine/annotations": "^1.2 || ^2.0",
         "doctrine/inflector": "^1.0 || ^2.0",
         "doctrine/cache": "~1.4",
         "doctrine/collections": "~1.4",