Update minimum symfony version to 6.4

Author: GromNaN

.github/workflows/continuous-integration.yml

@@ -28,9 +28,8 @@ jobs:
         stability:
           - "stable"
         symfony-version:
-          - "5.4.*"
           - "6.4.*"
-          - "7.0.x"
+          - "7.0.*"
         driver-version:
           - "stable"
         dependencies:
@@ -41,10 +40,10 @@ jobs:
             php-version: "8.1"
             driver-version: "1.5.0"
             stability: "stable"
-            symfony-version: "5.4.*"
+            symfony-version: "6.4.*"
         exclude:
           - php-version: "8.1"
-            symfony-version: "7.0.x"
+            symfony-version: "7.0.*"
 
     services:
       mongodb: