cargo: bump buddy_system_allocator from 0.11.0 to 0.12.0 in /src/bare-metal/alloc-example (#3069)

Bumps
[buddy_system_allocator](https://github.com/rcore-os/buddy_system_allocator)
from 0.11.0 to 0.12.0.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/rcore-os/buddy_system_allocator/commit/b5f9cbd9de09947f1555e28fca9f2dfd1a28909b"><code>b5f9cbd</code></a>
Release v0.12.0</li>
<li><a
href="https://github.com/rcore-os/buddy_system_allocator/commit/88eb8f87dbafdfbdf7fb09f6523957399f95fa87"><code>88eb8f8</code></a>
Bump dependencies</li>
<li><a
href="https://github.com/rcore-os/buddy_system_allocator/commit/0365e07cac2a6a331b63955ed8f91811c7be4407"><code>0365e07</code></a>
feat: make dealloc unsafe, fix <a
href="https://redirect.github.com/rcore-os/buddy_system_allocator/issues/37">#37</a></li>
<li><a
href="https://github.com/rcore-os/buddy_system_allocator/commit/8a1fde0745de688c0893992a462a937f7466b4b7"><code>8a1fde0</code></a>
Merge pull request <a
href="https://redirect.github.com/rcore-os/buddy_system_allocator/issues/39">#39</a>
from qwandor/clippy</li>
<li><a
href="https://github.com/rcore-os/buddy_system_allocator/commit/2167a087d22cdc4cded28d7b84baf68e5b3d4ca1"><code>2167a08</code></a>
Merge pull request <a
href="https://redirect.github.com/rcore-os/buddy_system_allocator/issues/41">#41</a>
from Poseidon-fan/master</li>
<li><a
href="https://github.com/rcore-os/buddy_system_allocator/commit/ef41b9685b8dd54d7b4297450d72c92f4e864403"><code>ef41b96</code></a>
fix: init syntax err in readme doc</li>
<li><a
href="https://github.com/rcore-os/buddy_system_allocator/commit/001b08e53df89175affd4d3bd7c68d2b99c3f4e5"><code>001b08e</code></a>
Merge pull request <a
href="https://redirect.github.com/rcore-os/buddy_system_allocator/issues/40">#40</a>
from lbotsch/master</li>
<li><a
href="https://github.com/rcore-os/buddy_system_allocator/commit/00318d3ecb573474931bb83e5a58c3b324ae9cbf"><code>00318d3</code></a>
Merge pull request <a
href="https://redirect.github.com/rcore-os/buddy_system_allocator/issues/38">#38</a>
from qwandor/deps</li>
<li><a
href="https://github.com/rcore-os/buddy_system_allocator/commit/f7ffdcf8669c812bdbafbfece593f37d8b4617cc"><code>f7ffdcf</code></a>
Make LockedFrameAllocator const constructable</li>
<li><a
href="https://github.com/rcore-os/buddy_system_allocator/commit/6089a61a66345314aec6560259dccea8c32da2ad"><code>6089a61</code></a>
Fix clippy warnings.</li>
<li>Additional commits viewable in <a
href="https://github.com/rcore-os/buddy_system_allocator/compare/v0.11.0...v0.12.0">compare
view</a></li>
</ul>
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src/bare-metal/alloc-example/Cargo.lock

@@ -7,7 +7,7 @@ edition = "2024"
 publish = false
 
 [dependencies]
-buddy_system_allocator = "0.11.0"
+buddy_system_allocator = "0.12.0"
 panic-halt = "1.0.0"
 
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