Fix logging bufio.Scanner bug.

A bug in used log lib github.com/sirupsen/logrus v1.9.0:

   Error while reading from Writer: bufio.Scanner: token too long #1370

 sirupsen/logrus#1370

That was closing unexpectly the stderr log socket provided by containerpilot
to managed services.

Good catch by Ema Musella which founds the exact error message that lead us
to problem solving.

The bug is fixed by updating logrus to release 1.9.3.

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/hashicorp/go-cleanhttp v0.5.2
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/prometheus/client_golang v1.13.0
-	github.com/sirupsen/logrus v1.9.0
+	github.com/sirupsen/logrus v1.9.3
 	github.com/stretchr/testify v1.8.1
 )
 

go.sum

@@ -303,6 +303,8 @@ github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6Mwd
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
 github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0=
 github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=