build(deps): update core to v1.2.0 and data_client to v1.0.0

- Update core dependency from commit 828b984 to v1.2.0
- Update data_client dependency from commit 960a008 to v1.0.0
- Update corresponding resolved-refs in pubspec.lock

Author: fulleni

pubspec.lock

@@ -109,11 +109,11 @@ packages:
     dependency: "direct main"
     description:
       path: "."
-      ref: "828b984517edec069266579c624c7af9fbe0e2ac"
-      resolved-ref: "828b984517edec069266579c624c7af9fbe0e2ac"
+      ref: "v1.2.0"
+      resolved-ref: d052799c1ebb7bcdd1a725a2a7919948c14fa001
       url: "https://github.com/flutter-news-app-full-source-code/core.git"
     source: git
-    version: "0.0.0"
+    version: "1.2.0"
   coverage:
     dependency: transitive
     description:
@@ -134,8 +134,8 @@ packages:
     dependency: "direct main"
     description:
       path: "."
-      ref: "960a00882045ee252274d9d57bfca606c1fe5d64"
-      resolved-ref: "960a00882045ee252274d9d57bfca606c1fe5d64"
+      ref: "v1.0.0"
+      resolved-ref: b9a8a8c2c660928c22f2d38d657000bcae4c74d6
       url: "https://github.com/flutter-news-app-full-source-code/data-client.git"
     source: git
     version: "0.0.0"

pubspec.yaml

@@ -10,11 +10,11 @@ dependencies:
   core:
     git:
       url: https://github.com/flutter-news-app-full-source-code/core.git
-      ref: 828b984517edec069266579c624c7af9fbe0e2ac
+      ref: v1.2.0
   data_client:
     git:
       url: https://github.com/flutter-news-app-full-source-code/data-client.git
-      ref: 960a00882045ee252274d9d57bfca606c1fe5d64
+      ref: v1.0.0
   logging: ^1.3.0
   mongo_dart: ^0.10.5
   uuid: ^4.5.1