go.sum: update to match wireguard-go version update.

Signed-off-by: David Anderson <dave@natulte.net>

go.sum

@@ -112,6 +112,8 @@ github.com/tailscale/depaware v0.0.0-20201214215404-77d1e9757027 h1:lK99QQdH3yBW
 github.com/tailscale/depaware v0.0.0-20201214215404-77d1e9757027/go.mod h1:p9lPsd+cx33L3H9nNoecRRxPssFKUwwI50I3pZ0yT+8=
 github.com/tailscale/wireguard-go v0.0.0-20201220011020-db78fad0bebf h1:HuBwLWbDNIh/G72KSImSEx+dnd7FPGFI1e60LMJtLjU=
 github.com/tailscale/wireguard-go v0.0.0-20201220011020-db78fad0bebf/go.mod h1:9PbAnF5CAklkURoO0uQhm+YUjDmm9T9oCyTGlCHuTPQ=
+github.com/tailscale/wireguard-go v0.0.0-20201228234719-da0d2727455d h1:ha3qx0YBsEYM1VpLoAxVyLsz74H2a/Kv/id+2Bo/WLU=
+github.com/tailscale/wireguard-go v0.0.0-20201228234719-da0d2727455d/go.mod h1:FEGDKc5yHNWtTS5ugWnHMNF0d9LlaHv/zQwOrVogo2U=
 github.com/tailscale/wireguard-go v0.0.20201119-0.20201228205120-066446d1733a h1:RUJeuZlAm1DT6Mhk9UTsaHrDeDZhPrbKfNsaEtKF6+0=
 github.com/tailscale/wireguard-go v0.0.20201119-0.20201228205120-066446d1733a/go.mod h1:UIAx57STfAZOrNVj8QGP2zG3ovWPMTD4DDubFHqMlYI=
 github.com/tcnksm/go-httpstat v0.2.0 h1:rP7T5e5U2HfmOBmZzGgGZjBQ5/GluWUylujl0tJ04I0=