Refactor tests to remove googles internal libarys

[AdaBehan]

Currently the tests for the project requires the use of googles internal library's. Without access to these library's a developer cannot run the tests against the codebase. I prepose we change these dependency's to equivalent open source ones.

https://github.com/opiproject/smbios-validation-tool/blob/main/smbios_validation_tool/validator_test.py#L22
https://github.com/opiproject/smbios-validation-tool/blob/main/smbios_validation_tool/error_bucket_test.py#L4
https://github.com/opiproject/smbios-validation-tool/blob/main/smbios_validation_tool/rules_test.py#L23
https://github.com/opiproject/smbios-validation-tool/blob/main/smbios_validation_tool/matcher_test.py#L23

The three packages are.

from google3.pyglib import resources
from google3.testing.pybase import googletest
from google3.testing.pybase import parameterized