go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.

Change-Id: I654cf7e89f7e33a9f7144f6abc18cde3d14c98e4
Reviewed-on: https://go-review.googlesource.com/c/image/+/617657
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Gopher Robot <gobot@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

diff --git a/go.mod b/go.mod
index d48331e..0052a25 100644
--- a/go.mod
+++ b/go.mod

@@ -2,4 +2,4 @@
 
 go 1.18
 
-require golang.org/x/text v0.18.0
+require golang.org/x/text v0.19.0

diff --git a/go.sum b/go.sum
index d4877b0..a68dcab 100644
--- a/go.sum
+++ b/go.sum

@@ -1,2 +1,2 @@
-golang.org/x/text v0.18.0 h1:XvMDiNzPAl0jr17s6W9lcaIhGUfUORdGCNsuLmPG224=
-golang.org/x/text v0.18.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
+golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
+golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=