build(deps): bump displaydoc from 0.1.6 to 0.1.7 (#689)

Bumps [displaydoc](https://github.com/yaahc/displaydoc) from 0.1.6 to 0.1.7.
- [Release notes](https://github.com/yaahc/displaydoc/releases)
- [Commits](https://github.com/yaahc/displaydoc/commits)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.lock

@@ -460,9 +460,9 @@ dependencies = [
 
 [[package]]
 name = "displaydoc"
-version = "0.1.6"
+version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6269d127174b18c665e683e23c2c55d3735fadbec4181c7c70b0450b764bfa5"
+checksum = "adc2ab4d5a16117f9029e9a6b5e4e79f4c67f6519bc134210d4d4a04ba31f41b"
 dependencies = [
  "proc-macro2 1.0.18",
  "quote 1.0.7",

zebra-chain/Cargo.toml

@@ -30,7 +30,7 @@ serde-big-array = "0.3.0"
 ed25519-zebra = "1.0"
 redjubjub = "0.2"
 equihash = "0.1"
-displaydoc = "0.1.6"
+displaydoc = "0.1.7"
 
 [dev-dependencies]
 proptest = "0.10"