Bump target-lexicon from 0.12.7 to 0.12.8 (#1997)

Bumps
[target-lexicon](https://github.com/bytecodealliance/target-lexicon)
from 0.12.7 to 0.12.8.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/bytecodealliance/target-lexicon/commit/d0b8f3769e6d6a9dfb37b02dab0fd0ff451ef40e"><code>d0b8f37</code></a>
chore: Release target-lexicon version 0.12.8</li>
<li><a
href="https://github.com/bytecodealliance/target-lexicon/commit/70e8b3aa8058ee91ce91bfd9b043d89770ac8556"><code>70e8b3a</code></a>
feat: Impl <code>*Architecture::into_str</code>,
<code>Vendor::as_str</code> (<a
href="https://redirect.github.com/bytecodealliance/target-lexicon/issues/90">#90</a>)</li>
<li><a
href="https://github.com/bytecodealliance/target-lexicon/commit/f9282f56cc065290031f7a9e83e312e8ff16dde8"><code>f9282f5</code></a>
fix <code>build.rs</code>: Use env <code>RUSTC</code> if present (<a
href="https://redirect.github.com/bytecodealliance/target-lexicon/issues/89">#89</a>)</li>
<li>See full diff in <a
href="https://github.com/bytecodealliance/target-lexicon/compare/v0.12.7...v0.12.8">compare
view</a></li>
</ul>
</details>
<br />


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lib/app/Cargo.toml

@@ -24,6 +24,6 @@ petgraph = "0.6"
 regex = "1"
 serde = { version = "1", features = ["derive", "rc"] }
 serde_json = "1"
-target-lexicon = "0.12.7"
+target-lexicon = "0.12.8"
 test-info = { path = "../test-info" }
 url = "2"