bump sirupsen/logrus v1.4.1

Full diff: https://github.com/sirupsen/logrus/compare/v1.3.0...v1.4.1

Fixes:

- Remove dependency on golang.org/x/crypto
- Fix wrong method calls Logger.Print and Logger.Warningln
- Update Entry.Logf to not do string formatting unless the log level is enabled
- Fix infinite recursion on unknown Level.String()
- Fix race condition in getCaller
- Fix Entry.WithContext method to return a copy of the initial entry

New:

- Add DeferExitHandler, similar to RegisterExitHandler but prepending the handler to the list of handlers (semantically like defer)
- Add CallerPrettyfier to JSONFormatter and `TextFormatter`
- Add Entry.WithContext() and Entry.Context, to set a context on entries to be used e.g. in hooks
- Enhance TextFormatter to not print caller information when they are empty

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/sirupsen/logrus/exported.go

@@ -1,6 +1,7 @@
 package logrus
 
 import (
+	"context"
 	"io"
 	"time"
 )
@@ -55,6 +56,11 @@ func WithError(err error) *Entry {
 	return std.WithField(ErrorKey, err)
 }
 
+// WithContext creates an entry from the standard logger and adds a context to it.
+func WithContext(ctx context.Context) *Entry {
+	return std.WithContext(ctx)
+}
+
 // WithField creates an entry from the standard logger and adds a field to
 // it. If you want multiple fields, use `WithFields`.
 //