Bumps [golang.org/x/text](https://github.com/golang/text) from 0.19.0 to
0.20.0.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/golang/text/commit/efd25daf282ae4d20d3625f1ccb4452fe40967ae"><code>efd25da</code></a>
go.mod: update golang.org/x dependencies</li>
<li><a
href="https://github.com/golang/text/commit/8a0e65e7b4f02a20d3127cd6960cdf11941d2ad4"><code>8a0e65e</code></a>
README: don't recommend go get</li>
<li><a
href="https://github.com/golang/text/commit/fefda1abda0b8b7ada7be0c47594528770c4c162"><code>fefda1a</code></a>
internal/texttest: remove Run and Bench helpers</li>
<li><a
href="https://github.com/golang/text/commit/a457f47ba270b8aaa55d617b739beaee4233b2a0"><code>a457f47</code></a>
all: normalize subtest names to NFC</li>
<li>See full diff in <a
href="https://github.com/golang/text/compare/v0.19.0...v0.20.0">compare
view</a></li>
</ul>
</details>
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