This change should help when new system package dependenencies are added
to know what is new/changed. Since this script explicitly asks for
`bash`, variables are safely allowed ;)

Signed-off-by: Fletcher Nichol <fletcher@systeminit.com>

This program is now required via versions of the tonic crate which is
pulled into the OpenTelemetry family of Rust crates.

Signed-off-by: Fletcher Nichol <fletcher@systeminit.com>

This change updates a few strategies all of which reduce check time and
false positive failures:

- Remove `--all` flag which is deprecated for `--workspace` and is not
  the intended default behavior at a component/crate level (i.e. only
  check documentation for _this_ crate)
- Add `--all-features` to ensure that all feature-gated code
  documentation is also checked
- Add `--no-deps` flag which does not check documentation for
  dependencies

Signed-off-by: Fletcher Nichol <fletcher@systeminit.com>

Some notable changes:

- Upgrade to latest tracing/openteletetry dependencies:
  - opentelemetry 0.18.0
  - opentelemetry-otlp 0.11.0
  - opentelemetry-semantic-conventions 0.10.0
  - tracing-opentelemetry 0.18.0
- Due to updates in opentelemetry-api dropping some Display trait
  implementations some changes had to be made to preserve the string
  representations (in one case static strings is used, and in another
  case a wrapping unit type is used to ship a similar Display impl)

References: open-telemetry/opentelemetry-rust#758
References: tokio-rs/tracing#1218

Signed-off-by: Fletcher Nichol <fletcher@systeminit.com>