Bump golang.org/x/crypto from 0.19.0 to 0.21.0

Bumps [golang.org/x/crypto](https://github.com/golang/crypto) from 0.19.0 to 0.21.0.
- [Commits](https://github.com/golang/crypto/compare/v0.19.0...v0.21.0)

---
updated-dependencies:
- dependency-name: golang.org/x/crypto
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/mitchellh/go-vnc v0.0.0-20150629162542-723ed9867aed
 	github.com/terra-farm/go-xen-api-client v0.0.2
 	github.com/zclconf/go-cty v1.10.0
-	golang.org/x/crypto v0.19.0
+	golang.org/x/crypto v0.21.0
 )
 
 require (
@@ -80,11 +80,11 @@ require (
 	github.com/ugorji/go/codec v1.2.6 // indirect
 	github.com/ulikunitz/xz v0.5.10 // indirect
 	go.opencensus.io v0.24.0 // indirect
-	golang.org/x/net v0.17.0 // indirect
+	golang.org/x/net v0.21.0 // indirect
 	golang.org/x/oauth2 v0.7.0 // indirect
 	golang.org/x/sync v0.3.0 // indirect
-	golang.org/x/sys v0.17.0 // indirect
-	golang.org/x/term v0.17.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/term v0.18.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect
 	golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect