Update cobra args to fit with new api

Signed-off-by: David Freilich <david.freilich@appsflyer.com>

internal/commands/buildpack_new.go

@@ -34,7 +34,7 @@ func BuildpackNew(logger logging.Logger, creator BuildpackCreator) *cobra.Comman
 	cmd := &cobra.Command{
 		Use:     "new <id>",
 		Short:   "Creates basic scaffolding of a buildpack.",
-		Args:    cobra.ExactValidArgs(1),
+		Args:    cobra.MatchAll(cobra.ExactArgs(1), cobra.OnlyValidArgs),
 		Example: "pack buildpack new sample/my-buildpack",
 		Long:    "buildpack new generates the basic scaffolding of a buildpack repository. It creates a new directory `name` in the current directory (or at `path`, if passed as a flag), and initializes a buildpack.toml, and two executable bash scripts, `bin/detect` and `bin/build`. ",
 		RunE: logError(logger, func(cmd *cobra.Command, args []string) error {

internal/commands/buildpack_package.go

@@ -41,7 +41,7 @@ func BuildpackPackage(logger logging.Logger, cfg config.Config, packager Buildpa
 	cmd := &cobra.Command{
 		Use:     "package <name> --config <config-path>",
 		Short:   "Package a buildpack in OCI format.",
-		Args:    cobra.ExactValidArgs(1),
+		Args:    cobra.MatchAll(cobra.ExactArgs(1), cobra.OnlyValidArgs),
 		Example: "pack buildpack package my-buildpack --config ./package.toml\npack buildpack package my-buildpack.cnb --config ./package.toml --f file",
 		Long: "buildpack package allows users to package (a) buildpack(s) into OCI format, which can then to be hosted in " +
 			"image repositories or persisted on disk as a '.cnb' file. You can also package a number of buildpacks " +

internal/commands/package_buildpack.go

@@ -22,7 +22,7 @@ func PackageBuildpack(logger logging.Logger, cfg config.Config, packager Buildpa
 	cmd := &cobra.Command{
 		Use:     `package-buildpack <name> --config <package-config-path>`,
 		Hidden:  true,
-		Args:    cobra.ExactValidArgs(1),
+		Args:    cobra.MatchAll(cobra.ExactArgs(1), cobra.OnlyValidArgs),
 		Short:   "Package buildpack in OCI format.",
 		Example: "pack package-buildpack my-buildpack --config ./package.toml",
 		Long: "package-buildpack allows users to package (a) buildpack(s) into OCI format, which can then to be hosted in " +