fix: correct project scripts section name and bump version

- Changed [projectscripts] to [project.scripts] in pyproject.toml to properly register the myice command line tool
- Bump version to v0.4.3

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "myice"
-version = "v0.4.2"
+version = "v0.4.3"
 description = "myice parsing"
 authors = [
     { name = "Rene Luria", "email" = "<rene@luria.ch>"},
@@ -35,7 +35,7 @@ priority = "supplemental"
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
 
-[projectscripts]
+[project.scripts]
 myice = 'myice.myice:app'
 
 [tool.poetry.requires-plugins]