Migrate off Vault's internalshared folder to the separated-out repo

internal/cmd/commands/config/encryptdecrypt.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 
 	"github.com/hashicorp/boundary/internal/cmd/base"
-	"github.com/hashicorp/vault/internalshared/configutil"
+	"github.com/hashicorp/shared-secure-libs/configutil"
 	"github.com/hashicorp/vault/sdk/helper/strutil"
 	"github.com/mitchellh/cli"
 	"github.com/posener/complete"