Bump regex from 1.5.6 to 1.6.0

Bumps [regex](https://github.com/rust-lang/regex) from 1.5.6 to 1.6.0.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/regex/compare/1.5.6...1.6.0)

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

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

Cargo.toml

@@ -62,7 +62,7 @@ clircle = "0.3"
 bugreport = { version = "0.5.0", optional = true }
 dirs-next = { version = "2.0.0", optional = true }
 grep-cli = { version = "0.1.6", optional = true }
-regex = { version = "1.5.6", optional = true }
+regex = { version = "1.6.0", optional = true }
 walkdir = { version = "2.0", optional = true }
 bytesize = { version = "1.1.0" }