Bump tokio-stream from 0.1.15 to 0.1.16 (#1477)

Bumps [tokio-stream](https://github.com/tokio-rs/tokio) from 0.1.15 to
0.1.16.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/tokio-rs/tokio/commit/4ed0fa21e47dc4da978a9da80a61c3422e75f51b"><code>4ed0fa2</code></a>
chore: prepare tokio-stream v0.1.16 (<a
href="https://redirect.github.com/tokio-rs/tokio/issues/6825">#6825</a>)</li>
<li><a
href="https://github.com/tokio-rs/tokio/commit/12b2567b959ec754e6f58fb76b88a1a38f805771"><code>12b2567</code></a>
chore: use <code>poll_fn</code> from std (<a
href="https://redirect.github.com/tokio-rs/tokio/issues/6810">#6810</a>)</li>
<li><a
href="https://github.com/tokio-rs/tokio/commit/35f244ad096b5331a38edd5a8f0beb436104873e"><code>35f244a</code></a>
chore: prepare tokio-util v0.7.12 (<a
href="https://redirect.github.com/tokio-rs/tokio/issues/6823">#6823</a>)</li>
<li><a
href="https://github.com/tokio-rs/tokio/commit/1166ecc2accc1a4bab47612858e7166617d15cfe"><code>1166ecc</code></a>
config: enable full for tokio-util in the playground (<a
href="https://redirect.github.com/tokio-rs/tokio/issues/6818">#6818</a>)</li>
<li><a
href="https://github.com/tokio-rs/tokio/commit/27539ae3bdfd08b7503f4919fe13299537cc16fc"><code>27539ae</code></a>
runtime: fix race in yield_defers_until_park test (<a
href="https://redirect.github.com/tokio-rs/tokio/issues/6809">#6809</a>)</li>
<li><a
href="https://github.com/tokio-rs/tokio/commit/ea6d652a102dee3f22b490db70545b7f66a23fb7"><code>ea6d652</code></a>
chore: prepare Tokio v1.40.0 (<a
href="https://redirect.github.com/tokio-rs/tokio/issues/6806">#6806</a>)</li>
<li><a
href="https://github.com/tokio-rs/tokio/commit/11f66f43a09169b893212b854c6c49985ff2224f"><code>11f66f4</code></a>
chore: replace <code>ready!</code> with <code>std::task::ready!</code>
(<a
href="https://redirect.github.com/tokio-rs/tokio/issues/6804">#6804</a>)</li>
<li><a
href="https://github.com/tokio-rs/tokio/commit/479a56a010d25f86207841ec4fcc685402addcad"><code>479a56a</code></a>
time: eliminate timer wheel allocations (<a
href="https://redirect.github.com/tokio-rs/tokio/issues/6779">#6779</a>)</li>
<li><a
href="https://github.com/tokio-rs/tokio/commit/b37f0de28a17ced6a9e6738062770d6fea8c5364"><code>b37f0de</code></a>
runtime: implement initial set of task hooks (<a
href="https://redirect.github.com/tokio-rs/tokio/issues/6742">#6742</a>)</li>
<li><a
href="https://github.com/tokio-rs/tokio/commit/c9fad0846667c86d96ec151354229f2833fd9e1b"><code>c9fad08</code></a>
codec: fix typo in the docs for <code>Encoder::Error</code> (<a
href="https://redirect.github.com/tokio-rs/tokio/issues/6800">#6800</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/tokio-rs/tokio/compare/tokio-stream-0.1.15...tokio-stream-0.1.16">compare
view</a></li>
</ul>
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