add ignore-platform-req for PHP 8.4

Author: driehle

.github/workflows/continuous-integration.yml

@@ -32,7 +32,6 @@ jobs:
           - "8.1"
           - "8.2"
           - "8.3"
-          - "8.4"
         dbal-version:
           - "3.3.0"
         dependencies:
@@ -49,6 +48,16 @@ jobs:
             dbal-version: "3.3.0"
             dependencies: "lowest"
             optional-dependencies: true
+          - php-version: "8.4"
+            dbal-version: "3.3.0"
+            dependencies: "lowest"
+            optional-dependencies: true
+            composer-options: "--ignore-platform-req=php"
+          - php-version: "8.4"
+            dbal-version: "3.3.0"
+            dependencies: "highest"
+            optional-dependencies: true
+            composer-options: "--ignore-platform-req=php"
 
     services:
       mysql: