cargo-semver-checks is ignoring Cargo.lock and time@0.3.48 causes a regression

PRs started failing during our `cargo semver-checks` run. Even going back to `azure_core@1.0.0` trying to bisect this, it was failing. Seems it's a combination of two things:

1. https://github.com/time-rs/time/issues/783
2. https://github.com/obi1kenobi/cargo-semver-checks/issues/675

Even though we have `time` currently pinned to 0.3.47, `cargo-semver-checks` is ignoring it. Until at least 1 of the two issues above are fixed, we need to disable semver-checks.

This is a tracking issue to re-enable it once one of those two is fixed at least.