cmd/release: use Jessie for release builds, take 2

Fix of CL 171121. :(

Updates golang/go#31293

Change-Id: I7029a2158312043e6fbfaa24ec36a99c3ea1ffa7
Reviewed-on: https://go-review.googlesource.com/c/build/+/171124
Reviewed-by: Andrew Bonventre <andybons@golang.org>
diff --git a/cmd/release/release.go b/cmd/release/release.go
index 0afa475..0cf1e20 100644
--- a/cmd/release/release.go
+++ b/cmd/release/release.go
@@ -164,7 +164,7 @@
 var builds = []*Build{
 	{
 		Source:  true,
-		Builder: "linux-amd64-jessie", // using Jessie for at least [Go 1.11, Go 1.13] due to golang.org/issue/31336
+		Builder: "linux-amd64",
 	},
 	{
 		OS:      "linux",
@@ -184,7 +184,7 @@
 		OS:      "linux",
 		Arch:    "amd64",
 		Race:    true,
-		Builder: "linux-amd64",
+		Builder: "linux-amd64-jessie", // using Jessie for at least [Go 1.11, Go 1.13] due to golang.org/issue/31336
 	},
 	{
 		OS:      "linux",