update dep to 0.19.0 (#1514)

Author: whaught

go.mod

@@ -29,7 +29,7 @@ require (
 	github.com/gonum/internal v0.0.0-20181124074243-f884aa714029 // indirect
 	github.com/gonum/lapack v0.0.0-20181123203213-e4cdc5a0bff9 // indirect
 	github.com/gonum/matrix v0.0.0-20181209220409-c518dec07be9
-	github.com/google/exposure-notifications-server v0.18.2-0.20201228230945-5c73e7f7dcc9
+	github.com/google/exposure-notifications-server v0.19.0
 	github.com/google/go-cmp v0.5.4
 	github.com/google/uuid v1.1.2
 	github.com/gorilla/csrf v1.7.0

go.sum

@@ -597,8 +597,8 @@ github.com/gonum/matrix v0.0.0-20181209220409-c518dec07be9/go.mod h1:0EXg4mc1CNP
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
-github.com/google/exposure-notifications-server v0.18.2-0.20201228230945-5c73e7f7dcc9 h1:FquFrd6oFdxah+Ryq4g5jaRmkCCO80PGlEVgyIkMJbo=
-github.com/google/exposure-notifications-server v0.18.2-0.20201228230945-5c73e7f7dcc9/go.mod h1:eL1658rCU3qe1/HkDXrDfkeGY3uhm576GhBGLcTKJMM=
+github.com/google/exposure-notifications-server v0.19.0 h1:2ehtzfuDvxZR3ssWh26gGvGw7WZ5laKncXxco/OSk+8=
+github.com/google/exposure-notifications-server v0.19.0/go.mod h1:eL1658rCU3qe1/HkDXrDfkeGY3uhm576GhBGLcTKJMM=
 github.com/google/flatbuffers v1.11.0/go.mod h1:1AeVuKshWv4vARoZatz6mlQ0JxURH0Kv5+zNeJKJCa8=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=