build(deps): update core dependency to v1.3.0

- Update core dependency from v1.2.0 to v1.3.0 in pubspec.yaml and pubspec.lock
- Add dependency_override for core in pubspec.yaml to ensure correct version is used

Author: fulleni

pubspec.lock

@@ -177,11 +177,11 @@ packages:
     dependency: "direct main"
     description:
       path: "."
-      ref: "v1.2.0"
-      resolved-ref: d052799c1ebb7bcdd1a725a2a7919948c14fa001
+      ref: "v1.3.0"
+      resolved-ref: ee2ad7de28baec04d64c0afd3e3a61d7e4ad6cb0
       url: "https://github.com/flutter-news-app-full-source-code/core.git"
     source: git
-    version: "1.2.0"
+    version: "1.3.0"
   coverage:
     dependency: transitive
     description:

pubspec.yaml

@@ -46,7 +46,7 @@ dependencies:
   core:
     git:
       url: https://github.com/flutter-news-app-full-source-code/core.git
-      ref: v1.2.0
+      ref: v1.3.0
   data_api:
     git:
       url: https://github.com/flutter-news-app-full-source-code/data-api.git
@@ -136,3 +136,9 @@ flutter_native_splash:
   android: true
   ios: true
   web: true
+
+dependency_overrides:
+  core:
+    git:
+      url: https://github.com/flutter-news-app-full-source-code/core.git
+      ref: v1.3.0