Merge #3539

3539: Bump diesel from 1.4.5 to 1.4.6 r=mergify[bot] a=dependabot[bot]

Bumps [diesel](https://github.com/diesel-rs/diesel) from 1.4.5 to 1.4.6.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/diesel-rs/diesel/releases">diesel's releases</a>.</em></p>
<blockquote>
<h2>1.4.6</h2>
<h3>Fixed</h3>
<ul>
<li>Fixed a use-after-free issue in the <code>QueryableByName</code> implementation
of our <code>Sqlite</code> backend</li>
<li>Updated several dependencies</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/diesel-rs/diesel/blob/v1.4.6/CHANGELOG.md">diesel's changelog</a>.</em></p>
<blockquote>
<h2>[1.4.6] - 2021-03-05</h2>
<h3>Fixed</h3>
<ul>
<li>Fixed a use-after-free issue in the <code>QueryableByName</code> implementation
of our <code>Sqlite</code> backend</li>
<li>Updated several dependencies</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/diesel-rs/diesel/commit/b0c8e99b3e16a81a99c23af1ea90963d2ec7477d"><code>b0c8e99</code></a> Release diesel 1.4.6</li>
<li><a href="https://github.com/diesel-rs/diesel/commit/ae72835078156a3ff3b5b17e2a235189ef892af7"><code>ae72835</code></a> Merge pull request <a href="https://github.com/diesel-rs/diesel/issues/2663">#2663</a> from weiznich/bugfix/fix_use_after_free</li>
<li><a href="https://github.com/diesel-rs/diesel/commit/cead1a3b5d14ec90d356306b168ba0940167d36b"><code>cead1a3</code></a> Downgrade max bigdecimal version as the new version is incompatible</li>
<li><a href="https://github.com/diesel-rs/diesel/commit/2a612f078c625fa4c63012ec1f56e68141720229"><code>2a612f0</code></a> Run cargo fmt</li>
<li><a href="https://github.com/diesel-rs/diesel/commit/d699f1499f3cc1c6920cb6aebc72a3aff1880c8f"><code>d699f14</code></a> Bump some dependencies</li>
<li><a href="https://github.com/diesel-rs/diesel/commit/d2192118eba79ff08044455eabc784525de8d854"><code>d219211</code></a> Address review comments</li>
<li><a href="https://github.com/diesel-rs/diesel/commit/d4133288261612d43853245aa886e1a3a0d2dbfe"><code>d413328</code></a> Fix a use-after-free bug in our Sqlite backend</li>
<li><a href="https://github.com/diesel-rs/diesel/commit/8e9e639983b78fce456fd5cf5ea8aa1f0556ff66"><code>8e9e639</code></a> More fixes for mysql setup</li>
<li><a href="https://github.com/diesel-rs/diesel/commit/453cfb8eadbc39d26bbad928e3889864d4e9a707"><code>453cfb8</code></a> Remove clippy from ci on release branch</li>
<li><a href="https://github.com/diesel-rs/diesel/commit/d856d35fd5f134d3405e1f1324419ed3612fe0d1"><code>d856d35</code></a> Fix mysql instalation on macos</li>
<li>Additional commits viewable in <a href="https://github.com/diesel-rs/diesel/compare/v1.4.5...v1.4.6">compare view</a></li>
</ul>
</details>
<br />


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