Revert "[tmp] all 8.4 for core#707"

This reverts commit bbe550e.

Author: micszo

.github/workflows/browser-tests.yml

@@ -20,7 +20,7 @@ on:
 
 jobs:
     regression-oss-setup1:
-        name: "PHP 8.4/Node 22/PostgreSQL 18.0/Varnish/Redis 7.2"
+        name: "PHP 7.4/Node 18/PostgreSQL 18.0/Varnish/Redis 7.2"
         uses: ibexa/gh-workflows/.github/workflows/browser-tests.yml@main
         with:
             ci-scripts-branch: 'ibx-11328-php-8.4'
@@ -31,12 +31,12 @@ jobs:
             setup: "doc/docker/base-dev.yml:doc/docker/db-postgresql18.yml:doc/docker/varnish.yml:doc/docker/redis7.2.yml:doc/docker/selenium.yml"
             send-success-notification: ${{ github.event.inputs.send-success-notification != 'false' }}
             multirepository: true
-            php-image: "ghcr.io/ibexa/docker/php:8.4-node22"
+            php-image: "ghcr.io/ibexa/docker/php:7.4-node18"
             job-count: 2
             timeout: 60
         secrets: inherit
     regression-oss-setup2:
-        name: "PHP 8.4/Node 22/MariaDB 11.4/Compatibility layer/Valkey latest"
+        name: "PHP 8.0/Node 20/MariaDB 11.4/Compatibility layer/Valkey latest"
         uses: ibexa/gh-workflows/.github/workflows/browser-tests.yml@main
         with:
             ci-scripts-branch: 'ibx-11328-php-8.4'
@@ -50,7 +50,7 @@ jobs:
             use-compatibility-layer: true
             job-count: 2
             timeout: 60
-            php-image: "ghcr.io/ibexa/docker/php:8.4-node22"
+            php-image: "ghcr.io/ibexa/docker/php:8.0-node20"
         secrets: inherit
     regression-oss-setup3:
         name: "PHP 8.4/Node 22/MySQL 8.4/Solr 8/Redis latest"