Bump coverage from 1.12.0 to 1.13.1

Bumps [coverage](https://github.com/dart-lang/tools/tree/main/pkgs) from 1.12.0 to 1.13.1.
- [Release notes](https://github.com/dart-lang/tools/releases)
- [Commits](https://github.com/dart-lang/tools/commits/coverage-v1.13.1/pkgs)

---
updated-dependencies:
- dependency-name: coverage
  dependency-version: 1.13.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pubspec.lock

@@ -186,10 +186,10 @@ packages:
     dependency: "direct main"
     description:
       name: coverage
-      sha256: "9086475ef2da7102a0c0a4e37e1e30707e7fb7b6d28c209f559a9c5f8ce42016"
+      sha256: "802bd084fb82e55df091ec8ad1553a7331b61c08251eef19a508b6f3f3a9858d"
       url: "https://pub.dev"
     source: hosted
-    version: "1.12.0"
+    version: "1.13.1"
   crypto:
     dependency: transitive
     description: