fix(symfony and svn): Fix service-contracts version to avoid svn error due to PHP 8 code style

Author: julienloizelet

composer.json

@@ -11,7 +11,8 @@
 	"require": {
 		"php": "^7.2",
 		"crowdsec/bouncer": "0.14.0",
-		"symfony/polyfill-mbstring": "1.20.0"
+		"symfony/polyfill-mbstring": "1.20.0",
+		"symfony/service-contracts": "2.4.1"
 	},
 	"require-dev": {
 		"bramus/monolog-colored-line-formatter": "^3.0",