update ci config

Author: mmasiukevich

.scrutinizer.yml

@@ -59,8 +59,11 @@ checks:
 build:
   nodes:
     analysis:
+      environment:
+        php:
+          version: 7.4.5
       project_setup:
         override: true
       tests:
         override:
-          - php-scrutinizer-run --enable-security-analysis
+          - php-scrutinizer-run --enable-security-analysis