modules: update goexif dependency

See rwcarlsen/goexif#73 reasons

go.mod

@@ -22,7 +22,7 @@ require (
 	github.com/muesli/smartcrop v0.2.1-0.20181030220600-548bbf0c0965
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 // indirect
 	github.com/peterbourgon/diskv v0.0.0-20171120014656-2973218375c3
-	github.com/rwcarlsen/goexif v0.0.0-20190318171057-76e3344f7516
+	github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd
 	github.com/satori/go.uuid v0.0.0-20180103174451-36e9d2ebbde5 // indirect
 	github.com/stretchr/testify v1.3.0 // indirect
 	go.opencensus.io v0.19.2 // indirect

go.sum

@@ -137,8 +137,8 @@ github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R
 github.com/prometheus/procfs v0.0.0-20190117184657-bf6a532e95b1/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
 github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
-github.com/rwcarlsen/goexif v0.0.0-20190318171057-76e3344f7516 h1:unvLzUrgn54Nhn5yJB8qUBr/a7wiZHQaJ/8Y4yTGAjE=
-github.com/rwcarlsen/goexif v0.0.0-20190318171057-76e3344f7516/go.mod h1:hPqNNc0+uJM6H+SuU8sEs5K5IQeKccPqeSjfgcKGgPk=
+github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd h1:CmH9+J6ZSsIjUK3dcGsnCnO41eRBOnY12zwkn5qVwgc=
+github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd/go.mod h1:hPqNNc0+uJM6H+SuU8sEs5K5IQeKccPqeSjfgcKGgPk=
 github.com/satori/go.uuid v0.0.0-20180103174451-36e9d2ebbde5 h1:tfcGHuraNSEY9xRb9ckCMqMD7xAjzrYI1WpD7DA+nz8=
 github.com/satori/go.uuid v0.0.0-20180103174451-36e9d2ebbde5/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=