Do not automatically set a default for bootstrap

Author: Greg Bowler

action.yml

@@ -43,7 +43,6 @@ inputs:
   bootstrap:
     description: Path to bootstrap file
     required: false
-    default: vendor/autoload.php
 
   filter:
     description: Filter which tests to run

entrypoint

@@ -4,7 +4,7 @@ PATH=/tmp/vendor/bin:$PATH
 
 if [ -n "$action_php_version" ]
 then
-	echo "Using PHP version $action_php_version"
+	echo "Using PHP version: $action_php_version"
 	switch-php-version $action_php_version
 fi