Upgrade to PHP 8.4 and update dependencies

- Updated `.gitlab-ci.yml` to use `chill/base-image:8.4-edge` across all stages.
- Updated `composer.json` to require PHP `^8.4` and upgraded `lexik/jwt-authentication-bundle` to `^3.1.1`.

composer.json

@@ -8,7 +8,7 @@
         "social worker"
     ],
     "require": {
-        "php": "^8.3",
+        "php": "^8.4",
         "ext-dom": "*",
         "ext-json": "*",
         "ext-openssl": "*",
@@ -25,7 +25,7 @@
         "knplabs/knp-time-bundle": "^2.4",
         "knpuniversity/oauth2-client-bundle": "^2.10",
         "league/csv": "^9.7.1",
-        "lexik/jwt-authentication-bundle": "^2.16",
+        "lexik/jwt-authentication-bundle": "^3.1.1",
         "nyholm/psr7": "^1.4",
         "ocramius/package-versions": "^1.10 || ^2",
         "odolbeau/phone-number-bundle": "^3.6",