[ci] test against php 8.2 - add sf 6.3

Author: jrushlow

.github/workflows/ci.yaml

@@ -90,13 +90,14 @@ jobs:
             fail-fast: false
             matrix:
                 php-version:
-                    - '8.1'
+                    - '8.2'
                 symfony-version:
                     - '5.4.*'
                     - '5.4.x-dev'
                     - '6.0.x-dev'
                     - '6.1.x-dev'
                     - '6.2.x-dev'
+                    - '6.3.x-dev'
                 dependency-versions: ['highest']
                 allow-dev-deps-in-apps: ['0']
                 include: