fix(symfony): add missing dependency on symfony/deprecation-contracts (api-platform#5015)

Author: GuilhemN

composer.json

@@ -17,6 +17,7 @@
         "doctrine/inflector": "^1.0 || ^2.0",
         "psr/cache": "^1.0 || ^2.0 || ^3.0",
         "psr/container": "^1.0 || ^2.0",
+        "symfony/deprecation-contracts": "^2.1 || ^3.0",
         "symfony/http-foundation": "^4.4 || ^5.1 || ^6.0",
         "symfony/http-kernel": "^4.4 || ^5.1 || ^6.0",
         "symfony/property-access": "^3.4.19 || ^4.4 || ^5.1 || ^6.0",