chore: update rust-embed

ref: [RUSTSEC-2021-0126](https://rustsec.org/advisories/RUSTSEC-2021-0126.html)

Cargo.lock

@@ -881,9 +881,9 @@ dependencies = [
 
 [[package]]
 name = "encoding_rs"
-version = "0.8.30"
+version = "0.8.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7896dc8abb250ffdda33912550faa54c88ec8b998dec0b2c55ab224921ce11df"
+checksum = "9852635589dc9f9ea1b6fe9f05b50ef208c85c834a562f0c6abb1c475736ec2b"
 dependencies = [
  "cfg-if",
 ]
@@ -2127,9 +2127,9 @@ checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.36"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7342d5883fbccae1cc37a2353b09c87c9b0f3afd73f5fb9bba687a1f733b029"
+checksum = "ec757218438d5fda206afc041538b2f6d889286160d649a86a24d37e1235afd1"
 dependencies = [
  "unicode-xid",
 ]
@@ -2847,9 +2847,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
 
 [[package]]
 name = "syn"
-version = "1.0.90"
+version = "1.0.91"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "704df27628939572cd88d33f171cd6f896f4eaca85252c6e0a72d8d8287ee86f"
+checksum = "b683b2b825c8eef438b77c36a06dc262294da3d5a5813fac20da149241dcd44d"
 dependencies = [
  "proc-macro2",
  "quote",

Cargo.toml

@@ -35,7 +35,7 @@ num_enum = "0.5.6"
 pretty_env_logger = "0.4"
 pulldown-cmark = "*"
 rand = "0.8.4"
-rust-embed = "6.0.0"
+rust-embed = "6.3.0"
 serde_json = "1"
 syntect = "*"
 url = "2.2"