build(deps): bump base64 from 0.21.4 to 0.21.5 in /oracle-scripts (#135)

Bumps [base64](https://github.com/marshallpierce/rust-base64) from 0.21.4 to 0.21.5.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md">base64's changelog</a>.</em></p>
<blockquote>
<h1>0.21.5</h1>
<ul>
<li>Add <code>Debug</code> and <code>Clone</code> impls for the general purpose Engine</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/marshallpierce/rust-base64/commit/7f81bafe0e76bcdb84f3069d81d56d77a7a24280"><code>7f81baf</code></a> v0.21.5</li>
<li><a href="https://github.com/marshallpierce/rust-base64/commit/95dda57d41d6be23ff98d1fa6eb86741f49b746f"><code>95dda57</code></a> Merge pull request <a href="https://redirect.github.com/marshallpierce/rust-base64/issues/255">#255</a> from marshallpierce/mp/debug</li>
<li><a href="https://github.com/marshallpierce/rust-base64/commit/bda313a5bc29e0369319604e103698b8302ff300"><code>bda313a</code></a> Add Debug and Clone to general purpose Engine</li>
<li><a href="https://github.com/marshallpierce/rust-base64/commit/53a87376451e679cdbab2bbdc68d02501784c7e1"><code>53a8737</code></a> Merge pull request <a href="https://redirect.github.com/marshallpierce/rust-base64/issues/254">#254</a> from marshallpierce/mp/ci-all-targets</li>
<li><a href="https://github.com/marshallpierce/rust-base64/commit/c423b6ec2e40151c181cbf0a3ba1eed81ea216b2"><code>c423b6e</code></a> CI for all targets w/o default features</li>
<li><a href="https://github.com/marshallpierce/rust-base64/commit/9eaf503f9cb3818faba518491716e2e51007c8cb"><code>9eaf503</code></a> Merge pull request <a href="https://redirect.github.com/marshallpierce/rust-base64/issues/253">#253</a> from kpreid/features-and-build</li>
<li><a href="https://github.com/marshallpierce/rust-base64/commit/04451fb0bc85ce1572e11112faae1e5e04e94236"><code>04451fb</code></a> Allow <code>cargo test</code> to complete under any set of features.</li>
<li><a href="https://github.com/marshallpierce/rust-base64/commit/2ee1a00030a34a4149f3ea42d350f105c6d405df"><code>2ee1a00</code></a> <code>no_std</code> import simplification.</li>
<li>See full diff in <a href="https://github.com/marshallpierce/rust-base64/compare/v0.21.4...v0.21.5">compare view</a></li>
</ul>
</details>
<br />


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</details>

oracle-scripts/Cargo.toml

@@ -15,4 +15,4 @@ wasm-bindgen = "0.2.87"
 
 [dev-dependencies]
 hex = "0.4.3"
-base64 = "0.21.4"
+base64 = "0.21.5"