Bump mlugg/setup-zig from 1 to 2 in /.github/workflows (#2166)

Bumps [mlugg/setup-zig](https://github.com/mlugg/setup-zig) from 1 to 2.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/mlugg/setup-zig/releases">mlugg/setup-zig's
releases</a>.</em></p>
<blockquote>
<h2>v2.0.0</h2>
<ul>
<li>Support getting Zig version from <code>build.zig.zon</code></li>
<li>Add option to customize cache key to work around matrix
deficiencies</li>
<li>Clear Zig cache directory when it grows too large</li>
</ul>
<h2>v1.2.2</h2>
<blockquote>
<p>[!WARNING]
Assuming no serious bugs, this will be the last v1 release. <strong>I
highly recommend upgrading to v2.</strong></p>
</blockquote>
<ul>
<li>Update mirror list</li>
<li>Update dependencies
<ul>
<li>This includes the cache service, resolving <a
href="https://redirect.github.com/mlugg/setup-zig/issues/36">#36</a>;
sorry about that one!</li>
</ul>
</li>
<li>Validate minisign &quot;trusted comment&quot;</li>
</ul>
<h2>v1.2.1</h2>
<ul>
<li>Fix <code>.zip</code> tarball extraction</li>
<li>Add two new mirrors</li>
<li>Don't attempt to cache global Zig cache if it doesn't exist (<a
href="https://redirect.github.com/mlugg/setup-zig/issues/8">#8</a>)</li>
</ul>
<h2>v1.2.0</h2>
<ul>
<li>Add the <code>use-cache</code> option to disable preservation of the
Zig global cache directory</li>
</ul>
<h2>v1.1.1</h2>
<ul>
<li>Fix the restriction of <code>mirror</code> to not be
<code>ziglang.org</code> (I forgot to implement it before)</li>
<li>Append query parameter to downloads so mirrors can know that traffic
is coming from Actions</li>
<li>Add new mirror (thanks <a
href="https://github.com/hryx"><code>@​hryx</code></a>!)</li>
</ul>
<h2>v1.1.0</h2>
<ul>
<li>Support looking up Mach nominated versions, e.g.
<code>2024.5.0-mach</code></li>
<li>Support overriding download mirror</li>
</ul>
<p>See README.md for details.</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/mlugg/setup-zig/commit/aa9ad5c14eb3452e235a441c4f9a8e89f20d97bd"><code>aa9ad5c</code></a>
README: reference setup-zig@v2</li>
<li><a
href="https://github.com/mlugg/setup-zig/commit/851448343a5840680e2fb6014fb4826dacf49a8d"><code>8514483</code></a>
chore: Temporarily remove mirror (maintenance)</li>
<li><a
href="https://github.com/mlugg/setup-zig/commit/915f70607f6642da2dd36333035f4221a7bc8618"><code>915f706</code></a>
post: harden totalSize against fs races</li>
<li><a
href="https://github.com/mlugg/setup-zig/commit/9d38a7af8e8c3b19855b3596d164a6bedf3f2885"><code>9d38a7a</code></a>
minisign: fix typo</li>
<li><a
href="https://github.com/mlugg/setup-zig/commit/c912213482663b2f8e807ae8a62520c521efa508"><code>c912213</code></a>
Update machengine mirror ownership info</li>
<li><a
href="https://github.com/mlugg/setup-zig/commit/e1d6dd251fc5b850e52f042867f850092ab2a8cd"><code>e1d6dd2</code></a>
Support Mach nominated versions in <code>build.zig.zon</code></li>
<li><a
href="https://github.com/mlugg/setup-zig/commit/9ac9efd667c75d134f312be97f2be93e2394cc95"><code>9ac9efd</code></a>
Clear Zig cache directory when it grows too large</li>
<li><a
href="https://github.com/mlugg/setup-zig/commit/0a889b2ab1e3c375d7ed1078e3762c4f66196455"><code>0a889b2</code></a>
Update <code>@​actions/cache</code> to 4.0.2</li>
<li><a
href="https://github.com/mlugg/setup-zig/commit/0f2d1f2660fc9b5de998dbcf518774826d41ac8b"><code>0f2d1f2</code></a>
Validate trusted comment in minisign signature</li>
<li><a
href="https://github.com/mlugg/setup-zig/commit/806c1bbc966dc0edb943336f7c341fd8fc6d0089"><code>806c1bb</code></a>
Add option to customize cache key</li>
<li>Additional commits viewable in <a
href="https://github.com/mlugg/setup-zig/compare/v1...v2">compare
view</a></li>
</ul>
</details>
<br />


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.github/workflows/build-helper.yml

@@ -43,7 +43,7 @@ jobs:
                   sudo snap refresh
             - name: Install Zig (not Mac)
               if: matrix.platform != 'darwin'
-              uses: mlugg/setup-zig@v1
+              uses: mlugg/setup-zig@v2
 
             # The pre-installed version of the AWS CLI has a segfault problem so we'll install it via Homebrew instead.
             - name: Upgrade AWS CLI (Mac only)

.github/workflows/testdriver-build.yml

@@ -64,7 +64,7 @@ jobs:
                   version: 3.x
                   repo-token: ${{ secrets.GITHUB_TOKEN }}
             - name: Install Zig
-              uses: mlugg/setup-zig@v1
+              uses: mlugg/setup-zig@v2
 
             - name: Build
               run: task package