chore(deps): Bump postgres-protocol from 0.6.5 to 0.6.6 (#827)

Bumps [postgres-protocol](https://github.com/sfackler/rust-postgres)
from 0.6.5 to 0.6.6.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="496f46c8f5"><code>496f46c</code></a>
Release postgres-protocol v0.6.6</li>
<li><a
href="a454378370"><code>a454378</code></a>
Restore back compat</li>
<li><a
href="f777f7476c"><code>f777f74</code></a>
Merge pull request <a
href="https://redirect.github.com/sfackler/rust-postgres/issues/1059">#1059</a>
from ISibboI/master</li>
<li><a
href="7a5b19a786"><code>7a5b19a</code></a>
Update Rust version in CI to 1.67.0.</li>
<li><a
href="4c4059a63d"><code>4c4059a</code></a>
Propagate changes from <code>tokio-postgres</code> to
<code>postgres</code>.</li>
<li><a
href="98814b86bb"><code>98814b8</code></a>
Set user to executing processes' user by default.</li>
<li><a
href="e7eb24ad38"><code>e7eb24a</code></a>
Merge pull request <a
href="https://redirect.github.com/sfackler/rust-postgres/issues/1026">#1026</a>
from viniciusth/feature/allow-mismatch</li>
<li><a
href="d4514651d1"><code>d451465</code></a>
Merge pull request <a
href="https://redirect.github.com/sfackler/rust-postgres/issues/1052">#1052</a>
from sfackler/load-balance</li>
<li><a
href="84aed6312f"><code>84aed63</code></a>
fix wasm build</li>
<li><a
href="babc856227"><code>babc856</code></a>
clippy</li>
<li>Additional commits viewable in <a
href="https://github.com/sfackler/rust-postgres/compare/postgres-protocol-v0.6.5...postgres-protocol-v0.6.6">compare
view</a></li>
</ul>
</details>
<br />


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Cargo.lock

@@ -2366,9 +2366,9 @@ dependencies = [
 
 [[package]]
 name = "postgres-protocol"
-version = "0.6.5"
+version = "0.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78b7fa9f396f51dffd61546fd8573ee20592287996568e6175ceb0f8699ad75d"
+checksum = "49b6c5ef183cd3ab4ba005f1ca64c21e8bd97ce4699cfea9e8d9a2c4958ca520"
 dependencies = [
  "base64",
  "byteorder",