Bump regex from 1.7.1 to 1.7.3

Bumps [regex](https://github.com/rust-lang/regex) from 1.7.1 to 1.7.3.
- [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/1.7.1...1.7.3)

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

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

Cargo.lock

@@ -729,9 +729,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.7.1"
+version = "1.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48aaa5748ba571fb95cd2c85c09f629215d3a6ece942baa100950af03a34f733"
+checksum = "8b1f693b24f6ac912f4893ef08244d70b6067480d2f1a46e950c9691e6749d1d"
 dependencies = [
  "aho-corasick",
  "memchr",

Cargo.toml

@@ -39,7 +39,7 @@ argmax = "0.3.1"
 atty = "0.2"
 ignore = "0.4.20"
 num_cpus = "1.15"
-regex = "1.7.1"
+regex = "1.7.3"
 regex-syntax = "0.6"
 ctrlc = "3.2"
 humantime = "2.1"