Bump ansi_colours from 1.1.1 to 1.2.1

Bumps [ansi_colours](https://github.com/mina86/ansi_colours) from 1.1.1 to 1.2.1.
- [Release notes](https://github.com/mina86/ansi_colours/releases)
- [Commits](https://github.com/mina86/ansi_colours/commits)

---
updated-dependencies:
- dependency-name: ansi_colours
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Cargo.toml

@@ -42,7 +42,7 @@ regex-fancy = ["syntect/regex-fancy"] # Use the rust-only "fancy-regex" engine
 [dependencies]
 atty = { version = "0.2.14", optional = true }
 ansi_term = "^0.12.1"
-ansi_colours = "^1.1"
+ansi_colours = "^1.2"
 bincode = "1.0"
 console = "0.15.5"
 flate2 = "1.0"