Update module github.com/traefik/traefik/v2 to v2.7.0 (#124)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/sirupsen/logrus v1.8.1
 	github.com/slack-go/slack v0.10.3
 	github.com/spf13/pflag v1.0.5
-	github.com/traefik/traefik/v2 v2.6.3
+	github.com/traefik/traefik/v2 v2.7.0
 	gopkg.in/yaml.v2 v2.4.0
 	k8s.io/apimachinery v0.24.1
 	k8s.io/client-go v0.24.1
@@ -17,7 +17,6 @@ require (
 require (
 	github.com/PuerkitoBio/purell v1.1.1 // indirect
 	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
-	github.com/containous/alice v0.0.0-20181107144136-d83ebdd94cbd // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/emicklei/go-restful v2.9.5+incompatible // indirect
 	github.com/go-logr/logr v1.2.0 // indirect
@@ -29,33 +28,25 @@ require (
 	github.com/google/gnostic v0.5.7-v3refs // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
-	github.com/gorilla/context v1.1.1 // indirect
-	github.com/gorilla/mux v1.8.0 // indirect
-	github.com/gorilla/websocket v1.4.2 // indirect
-	github.com/gravitational/trace v0.0.0-20190726142706-a535a178675f // indirect
+	github.com/gorilla/websocket v1.5.0 // indirect
+	github.com/gravitational/trace v1.1.16-0.20220114165159-14a9a7dd6aaf // indirect
 	github.com/imdario/mergo v0.3.12 // indirect
-	github.com/jonboulle/clockwork v0.1.0 // indirect
+	github.com/jonboulle/clockwork v0.2.2 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/mailru/easyjson v0.7.6 // indirect
-	github.com/miekg/dns v1.1.45 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/patrickmn/go-cache v2.1.0+incompatible // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/traefik/paerser v0.1.5 // indirect
-	github.com/vulcand/predicate v1.1.0 // indirect
-	golang.org/x/crypto v0.0.0-20220214200702-86341886e292 // indirect
-	golang.org/x/mod v0.4.2 // indirect
-	golang.org/x/net v0.0.0-20220225172249-27dd8689420f // indirect
+	github.com/vulcand/predicate v1.2.0 // indirect
+	golang.org/x/crypto v0.0.0-20220427172511-eb4f295cb31f // indirect
+	golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4 // indirect
 	golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8 // indirect
-	golang.org/x/sys v0.0.0-20220209214540-3681064d5158 // indirect
+	golang.org/x/sys v0.0.0-20220307203707-22a9840ba4d7 // indirect
 	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
 	golang.org/x/text v0.3.7 // indirect
 	golang.org/x/time v0.0.0-20220224211638-0e9765cccd65 // indirect
-	golang.org/x/tools v0.1.6-0.20210726203631-07bc1bf47fb2 // indirect
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/protobuf v1.27.1 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect