cargo: bump the minor group in /src/exercises/bare-metal/rtc with 2 updates (#2700)

Bumps the minor group in /src/exercises/bare-metal/rtc with 2 updates:
[smccc](https://github.com/google/smccc) and
[spin](https://github.com/mvdnes/spin-rs).

Updates `smccc` from 0.1.1 to 0.2.0
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/google/smccc/blob/main/CHANGELOG.md">smccc's
changelog</a>.</em></p>
<blockquote>
<h2>0.2.0</h2>
<h3>Breaking changes</h3>
<ul>
<li>Added <code>psci::Version</code> type, which is used for the return
value of <code>psci::version</code>.</li>
</ul>
<h3>New features</h3>
<ul>
<li>Error types now implement <code>core::error::Error</code>.</li>
<li>Added 32-bit versions of 64-bit PSCI calls.</li>
<li>Added support for aarch32.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="6f90908b69"><code>6f90908</code></a>
Prepare for 0.2.0 release.</li>
<li><a
href="de93b5b6ce"><code>de93b5b</code></a>
Merge pull request <a
href="https://redirect.github.com/google/smccc/issues/10">#10</a> from
google/arm32</li>
<li><a
href="dc0d606d67"><code>dc0d606</code></a>
Fix typo and mention unit.</li>
<li><a
href="d12f420c1c"><code>d12f420</code></a>
Mention SMCCC 1.4 rather than 1.3 in Rustdoc comments.</li>
<li><a
href="2262f6f061"><code>2262f6f</code></a>
Add support for aarch32.</li>
<li><a
href="3aa617b774"><code>3aa617b</code></a>
Added 32-bit versions of 64-bit PSCI calls.</li>
<li><a
href="9bf9d346bd"><code>9bf9d34</code></a>
Add permisisons to fix clippy lint check in CI.</li>
<li><a
href="d973061b95"><code>d973061</code></a>
Merge pull request <a
href="https://redirect.github.com/google/smccc/issues/20">#20</a> from
google/psci</li>
<li><a
href="ecb5769aeb"><code>ecb5769</code></a>
Add type for PSCI version.</li>
<li><a
href="be2efbff29"><code>be2efbf</code></a>
Bump thiserror from 2.0.11 to 2.0.12 (<a
href="https://redirect.github.com/google/smccc/issues/19">#19</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/google/smccc/compare/0.1.1...0.2.0">compare
view</a></li>
</ul>
</details>
<br />

Updates `spin` from 0.9.8 to 0.10.0
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/zesterer/spin-rs/blob/master/CHANGELOG.md">spin's
changelog</a>.</em></p>
<blockquote>
<h1>[0.10.0] - 2025-03-26</h1>
<h3>Added</h3>
<ul>
<li><code>Mutex::try_lock_weak</code></li>
<li><code>RwLock::try_write_weak</code></li>
<li><code>RwLock::try_upgrade_weak</code></li>
</ul>
<h3>Changed</h3>
<ul>
<li>Updated MSRV to 1.60</li>
<li>Use <code>dep:</code> syntax in Cargo.toml</li>
<li><code>portable_atomic</code> feature has been renamed to
<code>portable-atomic</code>, for consistency.</li>
</ul>
<h3>Fixed</h3>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li>See full diff in <a
href="https://github.com/mvdnes/spin-rs/commits">compare view</a></li>
</ul>
</details>
<br />


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src/exercises/bare-metal/rtc/Cargo.lock

@@ -112,15 +112,18 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
 [[package]]
 name = "smccc"
-version = "0.1.1"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "617d17f088ec733e5a6b86da6ce4cce1414e6e856d6061c16dda51cceae6f68c"
+checksum = "4d28c99a9913f0686f470a6ff020e160195eb1a86f9c1800aab2b3abba4bc9b3"
+dependencies = [
+ "thiserror",
+]
 
 [[package]]
 name = "spin"
-version = "0.9.8"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+checksum = "d5fe4ccb98d9c292d56fec89a5e07da7fc4cf0dc11e156b41793132775d3e591"
 dependencies = [
  "lock_api",
 ]

src/exercises/bare-metal/rtc/Cargo.toml

@@ -11,8 +11,8 @@ arm-gic = "0.2.2"
 bitflags = "2.9.0"
 chrono = { version = "0.4.40", default-features = false }
 log = "0.4.27"
-smccc = "0.1.1"
-spin = "0.9.8"
+smccc = "0.2.0"
+spin = "0.10.0"
 
 [build-dependencies]
 cc = "1.2.17"