Bump to latest comrak

The semver bump is due to a breaking change that was introduced in
0.9.1. No acutal breaking changes in this release.

Author: jtgeibel

Cargo.lock

@@ -35,7 +35,7 @@ base64 = "0.13"
 cargo-registry-s3 = { path = "src/s3", version = "0.2.0" }
 chrono = { version = "0.4.0", features = ["serde"] }
 clap = "=3.0.0-beta.2"
-comrak = { version = "0.9", default-features = false }
+comrak = { version = "0.10", default-features = false }
 
 conduit = "0.9.0-alpha.5"
 conduit-conditional-get = "0.9.0-alpha.3"