build: Add assert_cmd as a dev dependency

The [`assert_cmd`](https://docs.rs/assert_cmd/latest/assert_cmd/) crate provides an interface which allows more fine-grained control over how an individual integration test is run compared with the `trycmd` crate we currently use everywhere. `assert_cmd` will help us write better integration tests for chunk uploading, which not only assert command output, but also ensure that the correct data is sent to the Sentry server (see #2194).

Author: szokeasaurusrex

Cargo.lock

@@ -83,6 +83,7 @@ chrono-tz = "0.8.4"
 secrecy = "0.8.0"
 
 [dev-dependencies]
+assert_cmd = "2.0.11"
 insta = { version = "1.26.0", features = ["redactions", "yaml"] }
 mockito = "0.31.1"
 predicates = "2.1.5"