Update using_cxx example to cxx 1.0.109 (#2200)

This eliminates the annotation introduced by
https://github.com/bazelbuild/rules_rust/pull/2192, because it includes
https://github.com/dtolnay/cxx/pull/1277.

This PR includes handwritten changes to WORKSPACE.bazel followed by the
generated result of running:

- `cd examples/crate_universe/using_cxx`
- `CARGO_BAZEL_REPIN=1 bazel sync --only=using_cxx`
- `CARGO_BAZEL_REPIN=1 bazel sync --only=cxxbridge_cmd_deps`

Tested by running `bazel build ...` in the same directory.