package/go: security bump version to 1.16.8

go1.16.8 (released 2021-09-09) includes a security fix to the archive/zip
package, as well as bug fixes to the archive/zip, go/internal/gccgoimporter,
html/template, net/http, and runtime/pprof packages.

https://golang.org/doc/devel/release#go1.16.minor

Signed-off-by: Christian Stewart <christian@paral.in>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/go/go.hash

@@ -1,3 +1,3 @@
 # From https://golang.org/dl/
-sha256  1a9f2894d3d878729f7045072f30becebe243524cf2fce4e0a7b248b1e0654ac  go1.16.7.src.tar.gz
+sha256  8f2a8c24b793375b3243df82fdb0c8387486dcc8a892ca1c991aa99ace086b98  go1.16.8.src.tar.gz
 sha256  2d36597f7117c38b006835ae7f537487207d8ec407aa9d9980794b2030cbc067  LICENSE

package/go/go.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GO_VERSION = 1.16.7
+GO_VERSION = 1.16.8
 GO_SITE = https://storage.googleapis.com/golang
 GO_SOURCE = go$(GO_VERSION).src.tar.gz