Update fuzzers for 1.70 and integrate with CI

[addisoncrump]

Summary

This extends #4559 by updating API usage to 1.70 and integrates fuzzer runs into the CI. This should only be merged once all the issues currently present in Rome that are discoverable by the fuzzer are found as to avoid false positives in downstream testing.

By integrating fuzzing into the CI, we can detect regressions immediately -- even if we don't have a unit test for that exact case.

Test Plan

This adds additional tests.

Changelog

• [ ] The PR requires a changelog line

Documentation

• [ ] The PR requires documentation
• [ ] I will create a new PR to update the documentation

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