Bump structopt from 0.3.9 to 0.3.12

Bumps [structopt](https://github.com/TeXitoi/structopt) from 0.3.9 to 0.3.12.
- [Release notes](https://github.com/TeXitoi/structopt/releases)
- [Changelog](https://github.com/TeXitoi/structopt/blob/master/CHANGELOG.md)
- [Commits](https://github.com/TeXitoi/structopt/compare/v0.3.9...v0.3.12)

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

Cargo.lock

@@ -1915,9 +1915,9 @@ checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
 [[package]]
 name = "structopt"
-version = "0.3.9"
+version = "0.3.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1bcbed7d48956fcbb5d80c6b95aedb553513de0a1b451ea92679d999c010e98"
+checksum = "c8faa2719539bbe9d77869bfb15d4ee769f99525e707931452c97b693b3f159d"
 dependencies = [
  "clap",
  "lazy_static",
@@ -1926,9 +1926,9 @@ dependencies = [
 
 [[package]]
 name = "structopt-derive"
-version = "0.4.2"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "095064aa1f5b94d14e635d0a5684cf140c43ae40a0fd990708d38f5d669e5f64"
+checksum = "3f88b8e18c69496aad6f9ddf4630dd7d585bcaf765786cb415b9aec2fe5a0430"
 dependencies = [
  "heck",
  "proc-macro-error",

Cargo.toml

@@ -20,7 +20,7 @@ reqwest = "0.10.1"
 serde = "1.0.104"
 serde_derive = "1.0.103"
 serde_json = "1.0.48"
-structopt = "0.3.9"
+structopt = "0.3.12"
 actix-rt = "1.0.0"
 
 [build-dependencies]