Fix tests of Murmur hash algorithm on big endian platforms

[frenzymadness]

Because Murmur algorithm is optimized for different platforms, it produces different results on little/big endian systems.
These changes only split results check for little/big endian systems.

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[mambocab]

Thanks for the PR, I appreciate it. However, I believe it's actually correct for the test, as it exists on master, to fail -- our murmur3 implementation should return results consistent with the server's implementation regardless of the platform. I'm going to close and schedule PYTHON-653 for evaluation for version 3.11, as we don't have time to schedule it in sooner.