Upgrade elastic driver

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/google/go-cmp v0.3.1 // indirect
 	github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e // indirect
 	github.com/minio/highwayhash v1.0.0 // indirect
-	github.com/olivere/elastic v6.2.22+incompatible
+	github.com/olivere/elastic v6.2.23+incompatible
 	github.com/pkg/errors v0.8.1 // indirect
 	github.com/robertkrimen/otto v0.0.0-20180617131154-15f95af6e78d
 	github.com/rwynn/gtm v0.0.0-20190819153110-515be98d5e90

go.sum

@@ -22,8 +22,8 @@ github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e h1:hB2xlXdHp/pmPZq
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/minio/highwayhash v1.0.0 h1:iMSDhgUILCr0TNm8LWlSjF8N0ZIj2qbO8WHp6Q/J2BA=
 github.com/minio/highwayhash v1.0.0/go.mod h1:xQboMTeM9nY9v/LlAOxFctujiv5+Aq2hR5dxBpaMbdc=
-github.com/olivere/elastic v6.2.22+incompatible h1:kfNhtWbbRep8LXUpHo4siKjnbqfy21BE0GwlquWx2bc=
-github.com/olivere/elastic v6.2.22+incompatible/go.mod h1:J+q1zQJTgAz9woqsbVRqGeB5G1iqDKVBWLNSYW8yfJ8=
+github.com/olivere/elastic v6.2.23+incompatible h1:oRGUA/8fKcnkDcqLuwGb5YCzgbgEBo+Y9gamsWqZ0qU=
+github.com/olivere/elastic v6.2.23+incompatible/go.mod h1:J+q1zQJTgAz9woqsbVRqGeB5G1iqDKVBWLNSYW8yfJ8=
 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/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=