Bump github.com/pkg/errors from 0.9.0 to 0.9.1

Bumps [github.com/pkg/errors](https://github.com/pkg/errors) from 0.9.0 to 0.9.1.
- [Release notes](https://github.com/pkg/errors/releases)
- [Commits](https://github.com/pkg/errors/compare/v0.9.0...v0.9.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

go.mod

@@ -15,7 +15,7 @@ require (
 	github.com/opencontainers/go-digest v1.0.0-rc1
 	github.com/opencontainers/runc v1.0.0-rc9
 	github.com/opencontainers/selinux v1.3.0
-	github.com/pkg/errors v0.9.0
+	github.com/pkg/errors v0.9.1
 	github.com/pquerna/ffjson v0.0.0-20181028064349-e517b90714f7
 	github.com/sirupsen/logrus v1.4.2
 	github.com/spf13/pflag v1.0.3 // indirect

go.sum

@@ -116,6 +116,8 @@ github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.0 h1:J8lpUdobwIeCI7OiSxHqEwJUKvJwicL5+3v1oe2Yb4k=
 github.com/pkg/errors v0.9.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pquerna/ffjson v0.0.0-20181028064349-e517b90714f7 h1:gGBSHPOU7g8YjTbhwn+lvFm2VDEhhA+PwDIlstkgSxE=

vendor/github.com/pkg/errors/cause.go

@@ -1,29 +0,0 @@
-// +build !go1.13
-
-package errors
-
-// Cause recursively unwraps an error chain and returns the underlying cause of
-// the error, if possible. An error value has a cause if it implements the
-// following interface:
-//
-//     type causer interface {
-//            Cause() error
-//     }
-//
-// If the error does not implement Cause, the original error will
-// be returned. If the error is nil, nil will be returned without further
-// investigation.
-func Cause(err error) error {
-	type causer interface {
-		Cause() error
-	}
-
-	for err != nil {
-		cause, ok := err.(causer)
-		if !ok {
-			break
-		}
-		err = cause.Cause()
-	}
-	return err
-}

vendor/github.com/pkg/errors/errors.go

@@ -260,3 +260,29 @@ func (w *withMessage) Format(s fmt.State, verb rune) {
 		io.WriteString(s, w.Error())
 	}
 }
+
+// Cause returns the underlying cause of the error, if possible.
+// An error value has a cause if it implements the following
+// interface:
+//
+//     type causer interface {
+//            Cause() error
+//     }
+//
+// If the error does not implement Cause, the original error will
+// be returned. If the error is nil, nil will be returned without further
+// investigation.
+func Cause(err error) error {
+	type causer interface {
+		Cause() error
+	}
+
+	for err != nil {
+		cause, ok := err.(causer)
+		if !ok {
+			break
+		}
+		err = cause.Cause()
+	}
+	return err
+}

vendor/github.com/pkg/errors/go113.go

@@ -36,36 +36,3 @@ func As(err error, target interface{}) bool { return stderrors.As(err, target) }
 func Unwrap(err error) error {
 	return stderrors.Unwrap(err)
 }
-
-// Cause recursively unwraps an error chain and returns the underlying cause of
-// the error, if possible. There are two ways that an error value may provide a
-// cause. First, the error may implement the following interface:
-//
-//     type causer interface {
-//            Cause() error
-//     }
-//
-// Second, the error may return a non-nil value when passed as an argument to
-// the Unwrap function. This makes Cause forwards-compatible with Go 1.13 error
-// chains.
-//
-// If an error value satisfies both methods of unwrapping, Cause will use the
-// causer interface.
-//
-// If the error is nil, nil will be returned without further investigation.
-func Cause(err error) error {
-	type causer interface {
-		Cause() error
-	}
-
-	for err != nil {
-		if cause, ok := err.(causer); ok {
-			err = cause.Cause()
-		} else if unwrapped := Unwrap(err); unwrapped != nil {
-			err = unwrapped
-		} else {
-			break
-		}
-	}
-	return err
-}

vendor/modules.txt

@@ -65,7 +65,7 @@ github.com/opencontainers/runc/libcontainer/user
 # github.com/opencontainers/selinux v1.3.0
 github.com/opencontainers/selinux/go-selinux
 github.com/opencontainers/selinux/go-selinux/label
-# github.com/pkg/errors v0.9.0
+# github.com/pkg/errors v0.9.1
 github.com/pkg/errors
 # github.com/pmezard/go-difflib v1.0.0
 github.com/pmezard/go-difflib/difflib