pubspec: set sdk constraint to >=3.0.0, bump dependencies

pubspec.yaml

@@ -6,22 +6,22 @@ repository: https://github.com/arnemolland/figma
 issue_tracker: https://github.com/arnemolland/figma/issues
 
 environment:
-  sdk: ">=2.17.0 <4.0.0"
+  sdk: ">=3.0.0 <4.0.0"
 
 dependencies:
-  http: ^0.13.5
+  http: ^1.0.0
   http2: ^2.0.1
-  json_annotation: ^4.8.0
+  json_annotation: ^4.8.1
   equatable: ^2.0.5
-  collection: ^1.17.1
-  copy_with_extension: ^5.0.0
+  collection: ^1.17.2
+  copy_with_extension: ^5.0.2
 
 dev_dependencies:
-  test: ^1.23.1
-  build_runner: ^2.3.3
-  json_serializable: ^6.6.1
-  copy_with_extension_gen: ^5.0.0
-  lints: ^2.0.1
-  markdown: ^7.0.0
-  args: ^2.4.0
-  yaml: ^3.1.1
+  test: ^1.24.3
+  build_runner: ^2.4.4
+  json_serializable: ^6.7.0
+  copy_with_extension_gen: ^5.0.2
+  lints: ^2.1.0
+  markdown: ^7.1.0
+  args: ^2.4.1
+  yaml: ^3.1.2