fix: Use Any for HttpResponse content argument

[last-partizan]

Django can handle anything here, that can be converted to string.

---

Django uses make_bytes internally, and can convert anything with iter method

    @content.setter
    def content(self, value):
        # Consume iterators upon assignment to allow repeated iteration.
        if hasattr(value, "__iter__") and not isinstance(
            value, (bytes, memoryview, str)
        ):
            content = b"".join(self.make_bytes(chunk) for chunk in value)
            if hasattr(value, "close"):
                try:
                    value.close()
                except Exception:
                    pass
        else:
            content = self.make_bytes(value)
        # Create a list of properly encoded bytestrings to support write().
        self._container = [content]


...

    def make_bytes(self, value):
        """Turn a value into a bytestring encoded in the output charset."""
        # Per PEP 3333, this response body must be bytes. To avoid returning
        # an instance of a subclass, this function returns `bytes(value)`.
        # This doesn't make a copy when `value` already contains bytes.

        # Handle string types -- we can't rely on force_bytes here because:
        # - Python attempts str conversion first
        # - when self._charset != 'utf-8' it re-encodes the content
        if isinstance(value, (bytes, memoryview)):
            return bytes(value)
        if isinstance(value, str):
            return bytes(value.encode(self.charset))
        # Handle non-string types.
        return str(value).encode(self.charset)

[sbdchd]

Thank you!!