package/go: bump version to 1.13.12

go1.13.9 (released 2020/03/19) includes fixes to the go command, tools, the
runtime, the toolchain, and the crypto/cypher package.

go1.13.10 (released 2020/04/08) includes fixes to the go command, the runtime,
and the os/exec and time packages.

go1.13.11 (released 2020/05/14) includes fixes to the compiler.

go1.13.12 (released 2020/06/01) includes fixes to the runtime, and the go/types
and math/big packages.

Release notes: https://golang.org/doc/go1.13

Signed-off-by: Christian Stewart <christian@paral.in>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 7cbb3dd94ec24929d937a95a57d9a5d54b9d444d)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/go/go.hash

@@ -1,3 +1,3 @@
 # From https://golang.org/dl/
-sha256	b13bf04633d4d8cf53226ebeaace8d4d2fd07ae6fa676d0844a688339debec34  go1.13.8.src.tar.gz
+sha256	17ba2c4de4d78793a21cc659d9907f4356cd9c8de8b7d0899cdedcef712eba34  go1.13.12.src.tar.gz
 sha256	2d36597f7117c38b006835ae7f537487207d8ec407aa9d9980794b2030cbc067  LICENSE

package/go/go.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GO_VERSION = 1.13.8
+GO_VERSION = 1.13.12
 GO_SITE = https://storage.googleapis.com/golang
 GO_SOURCE = go$(GO_VERSION).src.tar.gz