build(deps): bump regex in /ch_07/exploits/cve_2019_89242

Bumps [regex](https://github.com/rust-lang/regex) from 1.5.4 to 1.5.5.
- [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/1.5.4...1.5.5)

---
updated-dependencies:
- dependency-name: regex
  dependency-type: direct:production
...

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

ch_07/exploits/cve_2019_89242/Cargo.lock

@@ -535,9 +535,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.5.4"
+version = "1.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d07a8629359eb56f1e2fb1652bb04212c072a87ba68546a04065d525673ac461"
+checksum = "1a11647b6b25ff05a515cb92c365cec08801e83423a235b51e231e1808747286"
 dependencies = [
  "aho-corasick",
  "memchr",

ch_07/exploits/cve_2019_89242/Cargo.toml

@@ -10,4 +10,4 @@ edition = "2018"
 reqwest = { version = "0.11", default-features = false, features = ["blocking", "rustls-tls", "cookies", "multipart"] }
 anyhow = "1.0"
 chrono = "0.4"
-regex = "1.4"
+regex = "1.5"