fix: update DHCP library with the panic fix

See

* insomniacslk/dhcp#455
* insomniacslk/dhcp#454
* #4567

Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
(cherry picked from commit 936b4c4)

go.mod

@@ -61,7 +61,7 @@ require (
 	github.com/hashicorp/go-getter v1.5.9
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/hetznercloud/hcloud-go v1.33.1
-	github.com/insomniacslk/dhcp v0.0.0-20211026125128-ad197bcd36fd
+	github.com/insomniacslk/dhcp v0.0.0-20211214070828-5297eed8f489
 	github.com/jsimonetti/rtnetlink v0.0.0-20211203074127-fd9a11f42291
 	github.com/jxskiss/base62 v1.0.0
 	github.com/mattn/go-isatty v0.0.14

go.sum

@@ -651,8 +651,8 @@ github.com/imdario/mergo v0.3.12 h1:b6R2BslTbIEToALKP7LxUvijTsNI9TAe80pLWN2g/HU=
 github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
-github.com/insomniacslk/dhcp v0.0.0-20211026125128-ad197bcd36fd h1:jupbuQFZtwOBg/3EmK91/rGaYFkqCb9bwHOnwn7Cav0=
-github.com/insomniacslk/dhcp v0.0.0-20211026125128-ad197bcd36fd/go.mod h1:h+MxyHxRg9NH3terB1nfRIUaQEcI0XOVkdR9LNBlp8E=
+github.com/insomniacslk/dhcp v0.0.0-20211214070828-5297eed8f489 h1:jhdHqd7DxBrzfuFSoPxjD6nUVaV/1RIn9aHA0WCf/as=
+github.com/insomniacslk/dhcp v0.0.0-20211214070828-5297eed8f489/go.mod h1:h+MxyHxRg9NH3terB1nfRIUaQEcI0XOVkdR9LNBlp8E=
 github.com/j-keck/arping v0.0.0-20160618110441-2cf9dc699c56/go.mod h1:ymszkNOg6tORTn+6F6j+Jc8TOr5osrynvN6ivFWZ2GA=
 github.com/j-keck/arping v1.0.2/go.mod h1:aJbELhR92bSk7tp79AWM/ftfc90EfEi2bQJrbBFOsPw=
 github.com/jmespath/go-jmespath v0.0.0-20160202185014-0b12d6b521d8/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=