Update toolchain to nightly 2023-08-04

[remi-delmas-3000]

Description of changes:

bump toolchain to nightly-2023-08-04

Call-outs:

• disables tests/expected/slice_c_str/c_str.c because of ongoing refactor of c_str_literals Tracking Issue for c"…" string literals rust-lang/rust#105723

Testing:

CI tests are passing. Built and tested on Apple M1.

Checklist

• Each commit message has a non-empty body, explaining why the change was made
• Methods or procedures are documented
• Regression or unit tests are included, or existing tests cover the modified code
• My PR is restricted to a single feature or bugfix

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 and MIT licenses.

[celinval]

It looks good. I was just wondering if there's any specific reason why you updated our dependencies. If there's no reason, can you please revert those changes and push a separate PR?

BTW, thanks for fixing the documentation warnings. We should probably enforce no warnings in our CI but not here.

Thanks again!

[remi-delmas-3000]

It looks good. I was just wondering if there's any specific reason why you updated our dependencies. If there's no reason, can you please revert those changes and push a separate PR?

BTW, thanks for fixing the documentation warnings. We should probably enforce no warnings in our CI but not here.

Thanks again!

there's a clang-format-14 reports formatting error on the vec.c stub, but I could not reproduce it locally so I could not fix.

[adpaco-aws]

Thanks @remi-delmas-3000 !

here's a clang-format-14 reports formatting error on the vec.c stub, but I could not reproduce it locally so I could not fix.

Looks like it's been there for a while (seen it in other PRs) and our workflow is set to continue on errors from clang-format.