rust/checksum(deps): bump regex in /tools/checksum_updater

Bumps [regex](https://github.com/rust-lang/regex) from 1.11.2 to 1.12.2.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](rust-lang/regex@1.11.2...1.12.2)

---
updated-dependencies:
- dependency-name: regex
  dependency-version: 1.12.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

tools/checksum_updater/Cargo.lock

@@ -25,7 +25,7 @@ sha2 = "0.10"
 hex = "0.4"
 chrono = { version = "0.4", features = ["serde"] }
 semver = "1.0"
-regex = "1.11"
+regex = "1.12"
 futures = "0.3"
 tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }