chore(deps): Bump collection in /flutter_news_example/api

Bumps [collection](https://github.com/dart-lang/core/tree/main/pkgs) from 1.18.0 to 1.19.1.
- [Release notes](https://github.com/dart-lang/core/releases)
- [Commits](https://github.com/dart-lang/core/commits/collection-v1.19.1/pkgs)

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

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

Author: dependabot[bot]

flutter_news_example/api/pubspec.lock

@@ -125,10 +125,10 @@ packages:
     dependency: "direct main"
     description:
       name: collection
-      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
       url: "https://pub.dev"
     source: hosted
-    version: "1.18.0"
+    version: "1.19.1"
   convert:
     dependency: transitive
     description:

flutter_news_example/api/pubspec.yaml

@@ -7,7 +7,7 @@ environment:
   sdk: ">=3.0.0 <4.0.0"
 
 dependencies:
-  collection: ^1.16.0
+  collection: ^1.19.1
   dart_frog: ^1.1.0
   equatable: ^2.0.5
   http: ^1.2.2