build(deps): bump golang.org/x/mod from 0.38.0 to 0.40.0 (#1552)

Bumps [golang.org/x/mod](https://github.com/golang/mod) from 0.38.0 to
0.40.0.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="d3398d06de"><code>d3398d0</code></a>
go.mod: update golang.org/x dependencies</li>
<li><a
href="57549bfb0d"><code>57549bf</code></a>
sumdb: ignore unrelated hashes in Lookup</li>
<li><a
href="96f62ae6e9"><code>96f62ae</code></a>
sumdb/tlog: fix TileHashReader authentication bypass</li>
<li><a
href="13be9020bb"><code>13be902</code></a>
go.mod: update golang.org/x dependencies</li>
<li>See full diff in <a
href="https://github.com/golang/mod/compare/v0.38.0...v0.40.0">compare
view</a></li>
</ul>
</details>
<br />


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go.mod

@@ -22,7 +22,7 @@ require (
 	go.opentelemetry.io/otel/metric v1.44.0
 	go.opentelemetry.io/otel/sdk v1.44.0
 	go.opentelemetry.io/otel/sdk/metric v1.44.0
-	golang.org/x/mod v0.38.0
+	golang.org/x/mod v0.40.0
 	gopkg.in/yaml.v3 v3.0.1
 )