feat: switch to linting PHP 7.4 syntax from 7.2

Signed-off-by: Bart Jaskulski <bjaskulski@protonmail.com>

gitlab-ci-1.2.yml

 variables:
-  WPDESK_CI_VERSION: "2023.11.07"
+  WPDESK_CI_VERSION: "2023.11.10"
   MYSQL_ROOT_PASSWORD: "mysql"
   MYSQL_DATABASE: "wptest"
   MYSQL_USER: "mysql"
@@ -10,8 +10,8 @@ variables:
   COMPOSER_MEMORY_LIMIT: "-1"
   GIT_STRATEGY: "fetch"
   CONTRIBUTORS: "wpdesk,dyszczo,grola,piotrpo,marcinkolanko"
-  MINIMAL_WP_TESTED_UP: "5.4"
-  MINIMAL_WC_TESTED_UP: "4.1"
+  MINIMAL_WP_TESTED_UP: "6.2"
+  MINIMAL_WC_TESTED_UP: "8.1"
 
 stages:
   - prepare-vendor

includes/tests/lint.yml

@@ -13,6 +13,6 @@ lint:8.2:
   <<: *lint-tmpl
   image: gitlab.wpdesk.dev:5050/wpdesk/docker-tests/php-box:8.2
 
-lint:7.2:
+lint:7.4:
   <<: *lint-tmpl
-  image: gitlab.wpdesk.dev:5050/wpdesk/docker-tests/php-box:7.2
+  image: gitlab.wpdesk.dev:5050/wpdesk/docker-tests/php-box:7.4