all: raise timeout defaults

This avoids timing out on systems running very slowly.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/helper/proc/files.go

@@ -10,7 +10,7 @@ import (
 	"time"
 )
 
-var FulfillmentTimeout = 2 * time.Second
+var FulfillmentTimeout = 15 * time.Second
 
 func init() {
 	if testing.Testing() {