Upgrade go.step.sm/crypto dependency

The new version removes "env" and "expandenv" sprig functions.

go.mod

@@ -33,7 +33,7 @@ require (
 	github.com/urfave/cli v1.22.4
 	go.mozilla.org/pkcs7 v0.0.0-20210826202110-33d05740a352
 	go.step.sm/cli-utils v0.6.0
-	go.step.sm/crypto v0.11.0
+	go.step.sm/crypto v0.13.0
 	go.step.sm/linkedca v0.7.0
 	golang.org/x/crypto v0.0.0-20210915214749-c084706c2272
 	golang.org/x/net v0.0.0-20210913180222-943fd674d43e

go.sum

@@ -569,8 +569,8 @@ go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqe
 go.step.sm/cli-utils v0.6.0 h1:sH4FxBcjmbxyilKXheSyJuKF/QjpojpiW90ERwUWOgQ=
 go.step.sm/cli-utils v0.6.0/go.mod h1:jklBMavFl2PbmGlyxgax08ZnB0uWpadjuOlSKKXz+0U=
 go.step.sm/crypto v0.9.0/go.mod h1:+CYG05Mek1YDqi5WK0ERc6cOpKly2i/a5aZmU1sfGj0=
-go.step.sm/crypto v0.11.0 h1:VDpeVgEmqme/FK2w5QINxkOQ1FWOm/Wi2TwQXiacKr8=
-go.step.sm/crypto v0.11.0/go.mod h1:5YzQ85BujYBu6NH18jw7nFjwuRnDch35nLzH0ES5sKg=
+go.step.sm/crypto v0.13.0 h1:mQuP9Uu2FNmqCJNO0OTbvolnYXzONy4wdUBtUVcP1s8=
+go.step.sm/crypto v0.13.0/go.mod h1:5YzQ85BujYBu6NH18jw7nFjwuRnDch35nLzH0ES5sKg=
 go.step.sm/linkedca v0.7.0 h1:ydYigs0CgLFkPGjOO4KJcAcAWbuPP8ECF1IsyHdftYc=
 go.step.sm/linkedca v0.7.0/go.mod h1:5uTRjozEGSPAZal9xJqlaD38cvJcLe3o1VAFVjqcORo=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=