Bump test

Bumps the dart-dependencies group with 1 update in the /image-rotator directory: [test](https://github.com/dart-lang/test/tree/master/pkgs).


Updates `test` from 1.30.0 to 1.31.1
- [Release notes](https://github.com/dart-lang/test/releases)
- [Commits](https://github.com/dart-lang/test/commits/test-v1.31.1/pkgs)

---
updated-dependencies:
- dependency-name: test
  dependency-version: 1.31.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dart-dependencies
...

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

Author: dependabot[bot]

image-rotator/pubspec.lock

@@ -341,26 +341,26 @@ packages:
     dependency: "direct dev"
     description:
       name: test
-      sha256: "280d6d890011ca966ad08df7e8a4ddfab0fb3aa49f96ed6de56e3521347a9ae7"
+      sha256: ca578dc12bb8b2f40b67b7d3bd2fac4f31c01a6ff7130a14e2597b919934507f
       url: "https://pub.dev"
     source: hosted
-    version: "1.30.0"
+    version: "1.31.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      sha256: "8161c84903fd860b26bfdefb7963b3f0b68fee7adea0f59ef805ecca346f0c7a"
+      sha256: "2a122cbe059f8b610d3a5415f42e255b6c17b1f21eee1d960f31080237fb4f11"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.10"
+    version: "0.7.12"
   test_core:
     dependency: transitive
     description:
       name: test_core
-      sha256: "0381bd1585d1a924763c308100f2138205252fb90c9d4eeaf28489ee65ccde51"
+      sha256: d2e98ec12998368dc59ddd47ab709f2cd55acd6b66dc7db764455a44082f4bc5
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.16"
+    version: "0.6.18"
   typed_data:
     dependency: transitive
     description: