Merge pull request #469 from Scalingo/fix/466/tests

fix(tests): fix default Composer version

Author: Frzk

test/tests

@@ -22,12 +22,12 @@ declare -gA default_composer
 # Defaults for scalingo-20:
 default_php["scalingo-20"]="8.1."
 default_nginx["scalingo-20"]="1.26."
-default_composer["scalingo-20"]="2.7."
+default_composer["scalingo-20"]="2.8."
 
 # Defaults for scalingo-22:
 default_php["scalingo-22"]="8.1."
 default_nginx["scalingo-22"]="1.26."
-default_composer["scalingo-22"]="2.7."
+default_composer["scalingo-22"]="2.8."
 
 
 test::classic::defaults() {