build(deps): bump golang.org/x/mod from 0.25.0 to 0.26.0 (#3247)

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Bumps [golang.org/x/mod](https://github.com/golang/mod) from 0.25.0 to
0.26.0.
<details>
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<li><a
href="https://github.com/golang/mod/commit/ea04085b103002db3b0d02d6ebbd97a0ffa29202"><code>ea04085</code></a>
go.mod: update golang.org/x dependencies</li>
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go.mod

@@ -29,7 +29,7 @@ require (
 	github.com/spf13/pflag v1.0.6 // BSD-3-Clause
 	github.com/stretchr/testify v1.10.0 // MIT
 	golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b
-	golang.org/x/mod v0.25.0
+	golang.org/x/mod v0.26.0
 	golang.org/x/oauth2 v0.30.0
 	golang.org/x/sync v0.16.0
 	golang.org/x/sys v0.33.0 // indirect