chore(deps): bump intl from 0.19.0 to 0.20.2 in /changelog_cli

Bumps [intl](https://github.com/dart-lang/i18n/tree/main/pkgs) from 0.19.0 to 0.20.2.
- [Release notes](https://github.com/dart-lang/i18n/releases)
- [Commits](https://github.com/dart-lang/i18n/commits/intl-v0.20.2/pkgs)

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

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

changelog_cli/pubspec.yaml

@@ -17,7 +17,7 @@ dependencies:
   equatable: ^2.0.5
   file: ^7.0.1
   git: ^2.2.0
-  intl: ^0.19.0
+  intl: ">=0.19.0 <0.21.0"
   mason_logger: ^0.2.16
   pub_updater: ^0.4.0