package/go: security bump to version 1.16.9
go1.16.9 (released 2021-10-07) includes a security fix to the linker and
misc/wasm directory, as well as bug fixes to the runtime and to the
text/template package.
Signed-off-by: Christian Stewart <christian@paral.in>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>