build(deps): bump syn from 2.0.102 to 2.0.103 (#37449)

Bumps [syn](https://github.com/dtolnay/syn) from 2.0.102 to 2.0.103.
<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>2.0.103</h2>
<ul>
<li>Insert parentheses around binary operation with attribute (<a
href="https://redirect.github.com/dtolnay/syn/issues/1871">#1871</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="85d427679f"><code>85d4276</code></a>
Release 2.0.103</li>
<li><a
href="6f7b0f39b3"><code>6f7b0f3</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/syn/issues/1871">#1871</a>
from dtolnay/binaryattr</li>
<li><a
href="89f88facd1"><code>89f88fa</code></a>
Correctly track bailouts in parenthesized binary expressions</li>
<li><a
href="0e07372e40"><code>0e07372</code></a>
Add binary operator attribute bailout test</li>
<li><a
href="ca8d876bde"><code>ca8d876</code></a>
Insert parentheses around binary operation with attribute</li>
<li><a
href="5be0f7121f"><code>5be0f71</code></a>
Add binary operator attribute tests</li>
<li><a
href="026bb3cf32"><code>026bb3c</code></a>
Discard paren attrs in unparenthesize test</li>
<li><a
href="217dd626aa"><code>217dd62</code></a>
Preserve attributes of Expr::Paren in FlattenParens</li>
<li><a
href="ef977c1059"><code>ef977c1</code></a>
Update test suite to nightly-2025-06-11</li>
<li>See full diff in <a
href="https://github.com/dtolnay/syn/compare/2.0.102...2.0.103">compare
view</a></li>
</ul>
</details>
<br />


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Cargo.lock

@@ -7643,9 +7643,9 @@ checksum = "e454d048db5527d000bfddb77bd072bbf3a1e2ae785f16d9bd116e07c2ab45eb"
 
 [[package]]
 name = "syn"
-version = "2.0.102"
+version = "2.0.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6397daf94fa90f058bd0fd88429dd9e5738999cca8d701813c80723add80462"
+checksum = "e4307e30089d6fd6aff212f2da3a1f9e32f3223b1f010fb09b7c95f90f3ca1e8"
 dependencies = [
  "proc-macro2",
  "quote",