build(deps): Bump proc-macro2 from 1.0.75 to 1.0.76 (raviqqe#398)

Bumps [proc-macro2](https://github.com/dtolnay/proc-macro2) from 1.0.75
to 1.0.76.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/dtolnay/proc-macro2/releases">proc-macro2's
releases</a>.</em></p>
<blockquote>
<h2>1.0.76</h2>
<ul>
<li>Work around <code>dead_code</code> warning false positive (<a
href="https://redirect.github.com/dtolnay/proc-macro2/issues/435">#435</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/dtolnay/proc-macro2/commit/ea778eb80729a01094b033c45633122052d96fd4"><code>ea778eb</code></a>
Release 1.0.76</li>
<li><a
href="https://github.com/dtolnay/proc-macro2/commit/534bb8177f7a3ebc7bc9c265e4ae79e134711325"><code>534bb81</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/proc-macro2/issues/435">#435</a>
from dtolnay/deadcode</li>
<li><a
href="https://github.com/dtolnay/proc-macro2/commit/436ce07eedae4db7e0138d3d8d55d8666b2ba3a4"><code>436ce07</code></a>
Add link to dead_code autotrait bug</li>
<li><a
href="https://github.com/dtolnay/proc-macro2/commit/228503f96664cd47476e6a58efa1d3f4145674ed"><code>228503f</code></a>
Work around new dead_code warning</li>
<li>See full diff in <a
href="https://github.com/dtolnay/proc-macro2/compare/1.0.75...1.0.76">compare
view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=proc-macro2&package-manager=cargo&previous-version=1.0.75&new-version=1.0.76)](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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>