package/go: security bump to version 1.18.6

go1.18.6 includes security fixes to the net/http package, as well as bug fixes
to the compiler, the go command, the pprof command, the runtime, and the
crypto/tls, encoding/xml, and net packages.

https://github.com/golang/go/issues?q=milestone%3AGo1.18.6+label%3ACherryPickApproved

Signed-off-by: Christian Stewart <christian@paral.in>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/go/go.hash

@@ -1,3 +1,3 @@
 # From https://go.dev/dl
-sha256  9920d3306a1ac536cdd2c796d6cb3c54bc559c226fc3cc39c32f1e0bd7f50d2a  go1.18.5.src.tar.gz
+sha256  a7f1d50424355dabce66d1112b1cae439b6ee5e4f15edba6f104c0a4b173e895  go1.18.6.src.tar.gz
 sha256  2d36597f7117c38b006835ae7f537487207d8ec407aa9d9980794b2030cbc067  LICENSE

package/go/go.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GO_VERSION = 1.18.5
+GO_VERSION = 1.18.6
 GO_SITE = https://storage.googleapis.com/golang
 GO_SOURCE = go$(GO_VERSION).src.tar.gz