go.mod: update golang.org/x dependencies

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

Change-Id: I233ac6ce1eb6c455ea46bb2bc8864361fb933bea
Reviewed-on: https://go-review.googlesource.com/c/image/+/701302
Auto-Submit: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

diff --git a/go.mod b/go.mod
index 994f59b..d9991d2 100644
--- a/go.mod
+++ b/go.mod

@@ -2,4 +2,4 @@
 
 go 1.24.0
 
-require golang.org/x/text v0.28.0
+require golang.org/x/text v0.29.0

diff --git a/go.sum b/go.sum
index 433ec67..3adec61 100644
--- a/go.sum
+++ b/go.sum

@@ -1,2 +1,2 @@
-golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
-golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
+golang.org/x/text v0.29.0 h1:1neNs90w9YzJ9BocxfsQNHKuAT4pkghyXc4nhZ6sJvk=
+golang.org/x/text v0.29.0/go.mod h1:7MhJOA9CD2qZyOKYazxdYMF85OwPdEr9jTtBpO7ydH4=