Merge #1057

1057: Update proc-macro-crate requirement from 1 to 2 r=chitoyuu a=dependabot[bot]

Updates the requirements on [proc-macro-crate](https://github.com/bkchr/proc-macro-crate) to permit the latest version.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/bkchr/proc-macro-crate/releases">proc-macro-crate's releases</a>.</em></p>
<blockquote>
<h2>v2.0.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Release 2.0.0 by <a href="https://github.com/bkchr"><code>`@​bkchr</code></a>` in <a href="https://redirect.github.com/bkchr/proc-macro-crate/pull/39">bkchr/proc-macro-crate#39</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/bkchr/proc-macro-crate/compare/v1.3.1...v2.0.0">https://github.com/bkchr/proc-macro-crate/compare/v1.3.1...v2.0.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/bkchr/proc-macro-crate/commit/cc100ed2bc1ac9bb81812fd435a43e2ef023f355"><code>cc100ed</code></a> Merge pull request <a href="https://redirect.github.com/bkchr/proc-macro-crate/issues/39">#39</a> from bkchr/bkchr-2.0.0</li>
<li><a href="https://github.com/bkchr/proc-macro-crate/commit/39a7c1844fc4d73ef397a7e8d9419f1f3381aa44"><code>39a7c18</code></a> Release 2.0.0</li>
<li><a href="https://github.com/bkchr/proc-macro-crate/commit/1fdce5d354fdd73bbfb442820823a4b802254bd3"><code>1fdce5d</code></a> Merge pull request <a href="https://redirect.github.com/bkchr/proc-macro-crate/issues/33">#33</a> from bkchr/bkchr-release-1.3.1</li>
<li><a href="https://github.com/bkchr/proc-macro-crate/commit/39716a71aa947ea6c038505cab720f1843689e07"><code>39716a7</code></a> Release 1.3.1</li>
<li><a href="https://github.com/bkchr/proc-macro-crate/commit/5df7139f0a6874902f5cb2c2e10e33d6c2f659e4"><code>5df7139</code></a> Merge pull request <a href="https://redirect.github.com/bkchr/proc-macro-crate/issues/32">#32</a> from MarijnS95/toml_edit-0.19</li>
<li><a href="https://github.com/bkchr/proc-macro-crate/commit/a0b717afc57e722923d0b5ee9c3c0fdfea2cc670"><code>a0b717a</code></a> Bump MSRV to 1.60</li>
<li><a href="https://github.com/bkchr/proc-macro-crate/commit/1cf0fc07b37552ef1823acc37c33be15934e482a"><code>1cf0fc0</code></a> Bump <code>toml_edit</code> to <code>0.19</code></li>
<li><a href="https://github.com/bkchr/proc-macro-crate/commit/0ec934ad4fc0a25b1158fd5a9573ae06924e7dad"><code>0ec934a</code></a> Merge pull request <a href="https://redirect.github.com/bkchr/proc-macro-crate/issues/30">#30</a> from bkchr/release-1.3.0</li>
<li><a href="https://github.com/bkchr/proc-macro-crate/commit/27e449cc08acf216d83a5f954644a18f0eea655e"><code>27e449c</code></a> Merge pull request <a href="https://redirect.github.com/bkchr/proc-macro-crate/issues/31">#31</a> from bkchr/bkchr-fix-multiple-crates</li>
<li><a href="https://github.com/bkchr/proc-macro-crate/commit/a9aa11831f7553e1d55a538618c1cd42fda0a5ec"><code>a9aa118</code></a> Fix finding crates which import itself</li>
<li>Additional commits viewable in <a href="https://github.com/bkchr/proc-macro-crate/compare/v1.2.0...v2.0.0">compare view</a></li>
</ul>
</details>
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gdnative-derive/Cargo.toml

@@ -18,7 +18,7 @@ proc-macro = true
 syn = { version = "1", features = ["full", "extra-traits", "visit"] }
 quote = "1"
 proc-macro2 = "1"
-proc-macro-crate = "1"
+proc-macro-crate = "2"
 
 [dev-dependencies]
 # This is included for the doc tests.