bump deps and go version due to cves

Signed-off-by: Bohan Chen <bohanc@vmware.com>

go.mod

@@ -1,6 +1,6 @@
 module github.com/pivotal/kpack
 
-go 1.18
+go 1.21.4
 
 require (
 	github.com/BurntSushi/toml v1.2.1
@@ -26,8 +26,8 @@ require (
 	github.com/vdemeester/k8s-pkg-credentialprovider v1.22.4
 	github.com/whilp/git-urls v1.0.0
 	go.uber.org/zap v1.24.0
-	golang.org/x/crypto v0.9.0
-	golang.org/x/net v0.10.0
+	golang.org/x/crypto v0.15.0
+	golang.org/x/net v0.18.0
 	golang.org/x/sync v0.2.0
 	k8s.io/api v0.26.1
 	k8s.io/apimachinery v0.26.1
@@ -38,7 +38,7 @@ require (
 )
 
 require (
-	cloud.google.com/go/compute v1.19.0 // indirect
+	cloud.google.com/go/compute v1.19.1 // indirect
 	cloud.google.com/go/compute/metadata v0.2.3 // indirect
 	contrib.go.opencensus.io/exporter/ocagent v0.7.1-0.20200907061046-05415f1de66d // indirect
 	contrib.go.opencensus.io/exporter/prometheus v0.4.0 // indirect
@@ -130,7 +130,7 @@ require (
 	github.com/go-chi/chi v4.1.2+incompatible // indirect
 	github.com/go-git/gcfg v1.5.0 // indirect
 	github.com/go-git/go-billy/v5 v5.4.1 // indirect
-	github.com/go-jose/go-jose/v3 v3.0.0 // indirect
+	github.com/go-jose/go-jose/v3 v3.0.1 // indirect
 	github.com/go-kit/log v0.2.1 // indirect
 	github.com/go-logfmt/logfmt v0.5.1 // indirect
 	github.com/go-logr/logr v1.2.4 // indirect
@@ -264,17 +264,17 @@ require (
 	golang.org/x/exp v0.0.0-20230321023759-10a507213a29 // indirect
 	golang.org/x/mod v0.10.0 // indirect
 	golang.org/x/oauth2 v0.7.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
-	golang.org/x/term v0.8.0 // indirect
-	golang.org/x/text v0.9.0 // indirect
+	golang.org/x/sys v0.14.0 // indirect
+	golang.org/x/term v0.14.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
 	golang.org/x/tools v0.8.0 // indirect
 	gomodules.xyz/jsonpatch/v2 v2.2.0 // indirect
 	google.golang.org/api v0.121.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 // indirect
-	google.golang.org/grpc v1.55.0 // indirect
-	google.golang.org/protobuf v1.30.0 // indirect
+	google.golang.org/grpc v1.56.3 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/square/go-jose.v2 v2.6.0 // indirect