[CI] Tweak getTargetSkeletonVersion and test over Symfony 7.4.0-BETA1 too

Author: Kocal

.github/workflows/ci-linux.yaml

@@ -52,8 +52,15 @@ jobs:
                     - php-version: '8.1'
                       symfony-version: '6.4.*'
                       dependency-versions: 'lowest'
+
+                    # unreleased Symfony 7.4
+                    - php-version: '8.2'
+                      symfony-version: '^7.4.0-RC2'
+                      dependency-versions: 'highest'
+
+                    # unreleased Symfony 8.0
                     - php-version: '8.4'
-                      symfony-version: '^8.0.0-BETA1'
+                      symfony-version: '^8.0.0-RC2'
                       dependency-versions: 'highest'
 
         steps:

src/Test/MakerTestEnvironment.php

@@ -406,7 +406,13 @@ private function determineMissingDependencies(): array
 
     public function getTargetSkeletonVersion(): ?string
     {
-        return $_SERVER['SYMFONY_VERSION'] ?? '';
+        $symfonyVersion = $_SERVER['SYMFONY_VERSION'] ?? '';
+
+        return match (true) {
+            str_starts_with($symfonyVersion, '^7.4') && str_contains($symfonyVersion, 'RC') => '7.4.x-dev',
+            str_starts_with($symfonyVersion, '^8.0.') && str_contains($symfonyVersion, 'RC') => '8.0.x-dev',
+            default => $symfonyVersion,
+        };
     }
 
     private function composerRequireMakerBundle(string $projectDirectory): void