Bump golang.org/x/net from 0.5.0 to 0.7.0 in /tests (#792)

Bumps [golang.org/x/net](https://github.com/golang/net) from 0.5.0 to
0.7.0.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/golang/net/commit/8e2b117aee74f6b86c207a808b0255de45c0a18a"><code>8e2b117</code></a>
http2/hpack: avoid quadratic complexity in hpack decoding</li>
<li><a
href="https://github.com/golang/net/commit/547e7edf3873d6f3a9c093d3785f9e2289e00746"><code>547e7ed</code></a>
http2: avoid referencing ResponseWrite.Write parameter after
returning</li>
<li><a
href="https://github.com/golang/net/commit/39940adcaaa73e661124cb80fb8dd57ea929dbaf"><code>39940ad</code></a>
html: parse comments per HTML spec</li>
<li><a
href="https://github.com/golang/net/commit/87ce33ecb484cbb6bcfc8e506ce0330ef72e0847"><code>87ce33e</code></a>
go.mod: update golang.org/x dependencies</li>
<li><a
href="https://github.com/golang/net/commit/415cb6d518e71d202e2dc2f44c475cbff84eee72"><code>415cb6d</code></a>
all: fix some comments</li>
<li><a
href="https://github.com/golang/net/commit/7e3c19ca52e202ae203b1914fc00c8e47a4d72fa"><code>7e3c19c</code></a>
all: correct typos in comments</li>
<li><a
href="https://github.com/golang/net/commit/296f09aa3817abc1ddff7703799bf9babb7bbd16"><code>296f09a</code></a>
http2: case insensitive handling for 100-continue</li>
<li><a
href="https://github.com/golang/net/commit/f8411da775a685be247bbedcb3ed2c998f895cd2"><code>f8411da</code></a>
nettest: fix tests on dragonfly and js/wasm</li>
<li>See full diff in <a
href="https://github.com/golang/net/compare/v0.5.0...v0.7.0">compare
view</a></li>
</ul>
</details>
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tests/go.mod

@@ -3,8 +3,8 @@ module github.com/envoyproxy/protoc-gen-validate/tests
 go 1.12
 
 require (
-	github.com/envoyproxy/protoc-gen-validate v0.6.13
-	golang.org/x/net v0.5.0
+	golang.org/x/net v0.7.0
+	golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect
 	google.golang.org/protobuf v1.28.1
 )