go: security bump to 1.11.5

Go 1.11.5 addresses a reported security issue, CVE-2019-6486.

Signed-off-by: Christian Stewart <christian@paral.in>
Acked-by: Anisse Astier <anisse@astier.eu>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/go/go.hash

@@ -1,3 +1,3 @@
 # From https://golang.org/dl/
-sha256	4cfd42720a6b1e79a8024895fa6607b69972e8e32446df76d6ce79801bbadb15  go1.11.4.src.tar.gz
+sha256	bc1ef02bb1668835db1390a2e478dcbccb5dd16911691af9d75184bbe5aa943e  go1.11.5.src.tar.gz
 sha256	2d36597f7117c38b006835ae7f537487207d8ec407aa9d9980794b2030cbc067  LICENSE

package/go/go.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GO_VERSION = 1.11.4
+GO_VERSION = 1.11.5
 GO_SITE = https://storage.googleapis.com/golang
 GO_SOURCE = go$(GO_VERSION).src.tar.gz