vendor: Bump Cilium to latest master

This pulls in the Hubble API definitions from
cilium/cilium#16473

Signed-off-by: Sebastian Wicki <sebastian@isovalent.com>

go.mod

@@ -3,7 +3,7 @@ module github.com/cilium/hubble
 go 1.16
 
 require (
-	github.com/cilium/cilium v1.10.0-rc0.0.20210526015840-e19f8c1e71f9
+	github.com/cilium/cilium v1.10.0-rc0.0.20210811091228-2d075ea34720
 	github.com/fatih/color v1.12.0
 	github.com/google/go-cmp v0.5.6
 	github.com/sirupsen/logrus v1.8.1
@@ -12,7 +12,7 @@ require (
 	github.com/spf13/pflag v1.0.6-0.20200504143853-81378bbcd8a1
 	github.com/spf13/viper v1.8.1
 	github.com/stretchr/testify v1.7.0
-	golang.org/x/sys v0.0.0-20210510120138-977fb7262007
+	golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40
 	google.golang.org/grpc v1.39.0
 	google.golang.org/protobuf v1.27.1
 	gopkg.in/yaml.v2 v2.4.0
@@ -22,6 +22,6 @@ require (
 replace (
 	github.com/miekg/dns => github.com/cilium/dns v1.1.4-0.20190417235132-8e25ec9a0ff3
 	github.com/optiopay/kafka => github.com/cilium/kafka v0.0.0-20180809090225-01ce283b732b
-	go.universe.tf/metallb => github.com/cilium/metallb v0.1.1-0.20210520171949-40d425d20241
+	go.universe.tf/metallb => github.com/cilium/metallb v0.1.1-0.20210609003938-62cef75b3c9f
 	sigs.k8s.io/controller-tools => github.com/christarazi/controller-tools v0.3.1-0.20200911184030-7e668c1fb4c2
 )