Bump syn from 2.0.13 to 2.0.14 (#2812)

Bumps [syn](https://github.com/dtolnay/syn) from 2.0.13 to 2.0.14.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/dtolnay/syn/releases">syn's releases</a>.</em></p>
<blockquote>
<h2>2.0.14</h2>
<ul>
<li>Add Punctuated::pop_punct() (<a href="https://redirect.github.com/dtolnay/syn/issues/1442">#1442</a>, thanks <a href="https://github.com/programmerjake"><code>@​programmerjake</code></a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/dtolnay/syn/commit/23686e408a760848b95b421e5ff1895b70cc8380"><code>23686e4</code></a> Release 2.0.14</li>
<li><a href="https://github.com/dtolnay/syn/commit/ed15fda5e8662095b3b7456c521ff4bd1edc01af"><code>ed15fda</code></a> Merge pull request <a href="https://redirect.github.com/dtolnay/syn/issues/1442">#1442</a> from programmerjake/add-pop-punct</li>
<li><a href="https://github.com/dtolnay/syn/commit/81c503550e4080f86eb377a214c31245e4a64eeb"><code>81c5035</code></a> add Punctuated::pop_punct()</li>
<li><a href="https://github.com/dtolnay/syn/commit/2dc79880cd982ec217c0e0dbcf751a6e78186b43"><code>2dc7988</code></a> Update test suite to nightly-2023-04-05</li>
<li><a href="https://github.com/dtolnay/syn/commit/1c1c2f074fec3297e41b4e2ba70316fd2ce28d24"><code>1c1c2f0</code></a> Release syn-codegen 0.3.1</li>
<li><a href="https://github.com/dtolnay/syn/commit/97e79f52c8b26521554b7e2c5c154136e0b3d27d"><code>97e79f5</code></a> Fix html_root_url of syn-codegen crate</li>
<li><a href="https://github.com/dtolnay/syn/commit/fe5e16247f9d4ccc95fb82a123da912f25d8361e"><code>fe5e162</code></a> Merge pull request <a href="https://redirect.github.com/dtolnay/syn/issues/1440">#1440</a> from dtolnay/indexmap</li>
<li><a href="https://github.com/dtolnay/syn/commit/f761f2480db82633339b434d05b9eceddd9a2a10"><code>f761f24</code></a> Force indexmap std support</li>
<li>See full diff in <a href="https://github.com/dtolnay/syn/compare/2.0.13...2.0.14">compare view</a></li>
</ul>
</details>
<br />


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</details>

boa_macros/Cargo.toml

@@ -13,6 +13,6 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0.26"
-syn = { version = "2.0.13", features = ["full"] }
+syn = { version = "2.0.14", features = ["full"] }
 proc-macro2 = "1.0"
 synstructure = "0.13"