package/go: security bump version to 1.16.6

package/go: security bump version to 1.16.6

These minor releases include a security fix according to the new security policy (#44918).

crypto/tls clients can panic when provided a certificate of the wrong type for the negotiated parameters.
net/http clients performing HTTPS requests are also affected. The panic can be triggered by an attacker
in a privileged network position without access to the server certificate's private key, as long as a trusted
ECDSA or Ed25519 certificate for the server exists (or can be issued), or the client is configured with
Config.InsecureSkipVerify. Clients that disable all TLS_RSA cipher suites (that is, TLS 1.0–1.2 cipher
suites without ECDHE), as well as TLS 1.3-only clients, are unaffected.

This is CVE-2021-34558.

View the release notes for more information:

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

Signed-off-by: Christian Stewart <christian@paral.in>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>