chore(deps): bump golang.org/x/crypto in /plugins/common

Bumps [golang.org/x/crypto](https://github.com/golang/crypto) from 0.20.0 to 0.21.0.
- [Commits](https://github.com/golang/crypto/compare/v0.20.0...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>

plugins/common/go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/otiai10/copy v1.14.0
 	github.com/ryanuber/columnize v2.1.2+incompatible
 	github.com/spf13/pflag v1.0.5
-	golang.org/x/crypto v0.20.0
+	golang.org/x/crypto v0.21.0
 	golang.org/x/sync v0.6.0
 )
 
@@ -26,7 +26,7 @@ require (
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pkg/sftp v1.13.5 // indirect
 	golang.org/x/net v0.21.0 // indirect
-	golang.org/x/sys v0.17.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )