Bump prost from 0.11.9 to 0.12.3 (#2976)

Bumps [prost](https://github.com/tokio-rs/prost) from 0.11.9 to 0.12.3.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/tokio-rs/prost/commit/907e9f6fbf72262f52333459bbfb27224da1ad72"><code>907e9f6</code></a>
prost: prepare release <code>0.12.3</code> (<a
href="https://redirect.github.com/tokio-rs/prost/issues/947">#947</a>)</li>
<li><a
href="https://github.com/tokio-rs/prost/commit/acc1df83f73cda03c10722fbb739c7920b6b9048"><code>acc1df8</code></a>
Fix code generation for Name trait (<a
href="https://redirect.github.com/tokio-rs/prost/issues/944">#944</a>)</li>
<li><a
href="https://github.com/tokio-rs/prost/commit/3cf34f00d3b919ce65cc61fc869feba5aeb487e7"><code>3cf34f0</code></a>
prost: prepare release <code>0.12.2</code> (<a
href="https://redirect.github.com/tokio-rs/prost/issues/943">#943</a>)</li>
<li><a
href="https://github.com/tokio-rs/prost/commit/3ce212ff6107a5f296a082d7be4f0113da8fb887"><code>3ce212f</code></a>
feat: Generate implementation for <code>Name</code> trait (<a
href="https://redirect.github.com/tokio-rs/prost/issues/931">#931</a>)</li>
<li><a
href="https://github.com/tokio-rs/prost/commit/97cd4e29c46f1cac4d27428c759b6bc807c37201"><code>97cd4e2</code></a>
fix: generate <code>Name::full_name</code> properly (<a
href="https://redirect.github.com/tokio-rs/prost/issues/923">#923</a>)</li>
<li><a
href="https://github.com/tokio-rs/prost/commit/9dd655312240ba028660f0c7091a8b9a66406f2a"><code>9dd6553</code></a>
release 0.12.1 (<a
href="https://redirect.github.com/tokio-rs/prost/issues/918">#918</a>)</li>
<li><a
href="https://github.com/tokio-rs/prost/commit/6079136781a560a4e480002f3fbce37193f60937"><code>6079136</code></a>
Fixes 905, fix: Use full path of Result type + unit test + Option unti
test (...</li>
<li><a
href="https://github.com/tokio-rs/prost/commit/bf866464413ce4955eeaf09c4b6647d192b775ef"><code>bf86646</code></a>
prost-type: impl Hash for Duration (<a
href="https://redirect.github.com/tokio-rs/prost/issues/912">#912</a>)</li>
<li><a
href="https://github.com/tokio-rs/prost/commit/b258dc8227bdc77b9b1b3102493b3fccd4921393"><code>b258dc8</code></a>
release 0.12.0 (<a
href="https://redirect.github.com/tokio-rs/prost/issues/904">#904</a>)</li>
<li><a
href="https://github.com/tokio-rs/prost/commit/7ce9b9756ba1ca0c6228931e2a9ff7859931ac95"><code>7ce9b97</code></a>
feat: <code>Name</code> trait + <code>Any</code> encoding support (<a
href="https://redirect.github.com/tokio-rs/prost/issues/896">#896</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/tokio-rs/prost/compare/v0.11.9...v0.12.3">compare
view</a></li>
</ul>
</details>
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Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Dónal Murray <[email protected]>