Increase config fetcher timeout to 20s

This is to make sure timeout doesn't show up for users from APAC / EMEA regions

Bug: b/283828386
Change-Id: Ie04352553494634070e4c5e83a68b3004fbdf88c
diff --git a/ui/build/config.go b/ui/build/config.go
index bc0ab33..8e837de 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -42,7 +42,7 @@
 	jsonSuffix   = "json"
 
 	configFetcher         = "vendor/google/tools/soong/expconfigfetcher"
-	envConfigFetchTimeout = 10 * time.Second
+	envConfigFetchTimeout = 20 * time.Second
 )
 
 var (