chore: bumping version to 0.1.2+onekey1

The part after the `+` is a local version identifier, which is
suggested to use for patched upstream packages[^1]

I haven't bumped in `Cargo.toml`, as we don't care about the version
number in of the intermediate rust crate.

[^1]: https://packaging.python.org/en/latest/specifications/version-specifiers/#local-version-identifiers

Author: vlaci

setup.py

@@ -7,7 +7,7 @@
       url='http://github.com/benfred/py-cpp-demangle/',
       description="A package for demangling C++ linker symbols",
       long_description=open("README.rst").read(),
-      version="0.1.2",
+      version="0.1.2+onekey1",
       rust_extensions=[RustExtension('cpp_demangle', 'Cargo.toml',  binding=Binding.PyO3)],
       test_suite="tests",
       license="MIT",