fix hatch-cpp version in cppjswasm template

Author: timkpaine

cppjswasm/pyproject.toml.jinja

@@ -1,7 +1,7 @@
 [build-system]
 requires = [
     "hatchling",
-    "hatch-cpp<0.3",
+    "hatch-cpp",
     "hatch-js",
     "pybind11",
 ]
@@ -42,7 +42,7 @@ develop = [
     "check-dist",
     "cibuildwheel",
     "codespell",
-    "hatch-cpp<0.3",
+    "hatch-cpp",
     "hatch-js",
     "hatchling",
     "pybind11",