build(deps): Bump syn from 2.0.74 to 2.0.75 (#576)

Bumps [syn](https://github.com/dtolnay/syn) from 2.0.74 to 2.0.75.
<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>2.0.75</h2>
<ul>
<li>Automatically fill in missing turbofish when printing ExprPath and
other paths in expression position (<a
href="https://redirect.github.com/dtolnay/syn/issues/1722">#1722</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/dtolnay/syn/commit/d1746fe29d18ca704ed285844c365a14a77e8757"><code>d1746fe</code></a>
Release 2.0.75</li>
<li><a
href="https://github.com/dtolnay/syn/commit/b6936825a637376dd7584653e13776034759d3fd"><code>b693682</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/syn/issues/1722">#1722</a>
from dtolnay/exprpath</li>
<li><a
href="https://github.com/dtolnay/syn/commit/e459ee75bb60f54ce3ca1fb42f515936c06582a4"><code>e459ee7</code></a>
Insert turbofish into paths in expression position</li>
<li><a
href="https://github.com/dtolnay/syn/commit/3bb65aaae153130c3053bc691080aad9eb60a55c"><code>3bb65aa</code></a>
Add mod-style printing for paths that cannot contain generic args</li>
<li><a
href="https://github.com/dtolnay/syn/commit/ae8c84ab744b8c95d6b2607d3987590c12ef5280"><code>ae8c84a</code></a>
Handwrite ToTokens impl for Meta</li>
<li><a
href="https://github.com/dtolnay/syn/commit/5dbfeae027d3d5356289bbd37f5daede30a838cc"><code>5dbfeae</code></a>
Name the expr_style argument at all call sites of
path::parsing::qpath</li>
<li>See full diff in <a
href="https://github.com/dtolnay/syn/compare/2.0.74...2.0.75">compare
view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=syn&package-manager=cargo&previous-version=2.0.74&new-version=2.0.75)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
`@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits
that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after
your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge
and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating
it. You can achieve the same result by closing it manually
- `@dependabot show <dependency name> ignore conditions` will show all
of the ignore conditions of the specified dependency
- `@dependabot ignore this major version` will close this PR and stop
Dependabot creating any more for this major version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop
Dependabot creating any more for this minor version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop
Dependabot creating any more for this dependency (unless you reopen the
PR or upgrade to it yourself)


</details>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>