Replace Deprecated `abc` Decorators (#1)

[pixeeai]

The @abstractproperty, @abstractclassmethod, and @abstractstaticmethod decorators from abc has been deprecated since Python 3.3. This is because it's possible to use @property, @classmethod, and @staticmethod in combination with @abstractmethod.

Our changes look like the following:

 import abc

 class Foo:
-   @abc.abstractproperty
+   @property
+   @abc.abstractmethod
    def bar():
        ...

and similarly for @abstractclassmethod and @abstractstaticmethod.

More reading

* [https://docs.python.org/3/library/abc.html#abc.abstractproperty](https://docs.python.org/3/library/abc.html#abc.abstractproperty) * [https://docs.python.org/3/library/abc.html#abc.abstractclassmethod](https://docs.python.org/3/library/abc.html#abc.abstractclassmethod) * [https://docs.python.org/3/library/abc.html#abc.abstractstaticmethod](https://docs.python.org/3/library/abc.html#abc.abstractstaticmethod)

[pixeeai]

FYI - This change was autogenerated from a GitHub app - called Pixeebot. A code-quality GitHub App; like Dependabot, but for source code. Feel free to check it our for more details for how you can install it onto your project's repo for continued code hardening and code security recommendations.

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