only test on 8.4 for now

Author: Grotax

.github/workflows/phpstan-baseline.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        php-version: ['8.1', '8.2', '8.3', '8.4']
+        php-version: ['8.4']
       fail-fast: false
 
     steps: