Fix pubspec.yaml for publication

Author: renggli

pubspec.yaml

@@ -6,7 +6,6 @@ repository: https://github.com/petitparser/dart-petitparser-examples
 description: A collection of example parsers, applications, and benchmarks that
   illustrate the PetitParser framework.
 
-publish_to: none
 environment:
   sdk: '>=2.19.0 <3.0.0'
 dependencies:
@@ -20,14 +19,4 @@ dev_dependencies:
   build_runner: ^2.3.0
   build_web_compilers: ^3.2.0
   lints: ^2.0.0
-  test: ^1.24.0
-
-dependency_overrides:
-  xml:
-    git:
-      url: https://github.com/renggli/dart-xml.git
-      ref: main
-  petitparser:
-    git:
-      url: https://github.com/petitparser/dart-petitparser.git
-      ref: main
+  test: ^1.24.0