Update prost requirement from 0.7 to 0.8 in /dione-test-client

Created by: dependabot[bot]

Updates the requirements on prost to permit the latest version.

Release notes

Sourced from prost's releases.

v0.8.0

PROST! is a Protocol Buffers implementation for the Rust Language. prost generates simple, idiomatic Rust code from proto2 and proto3 files.

NOTE: This version contains a security fix for prost-types and is recommend that you upgrade to it from <0.7.

prost 0.8.0 includes breaking changes:

• Timestamp's From implementation for converting into SystemTime has been converted to a fallible TryFrom implementation.
• prost-build's compile_protos now takes impl AsRef<Path> to allow each parameter to use its own generic type.
• Bundled protoc version bumped to 3.15.8

As well as many new (non-breaking) changes:

• @​pluth enabled zero-copy support for Bytes based fields.
• @​sfackler for fixing message optionals and oneofs in prost-build.
• @​rubdos for adding the ability to encode prost messages directly to a Vec<u8>.

and numerous smaller fixes. Many thanks to the generous contributors who have helped out since 0.7:

• @​dfreese
• @​carols10cents
• @​pluth
• @​jfornoff
• @​sphw
• @​bpowers
• @​sfackler
• @​koushiro
• @​dbrgn
• @​argv-minus-one
• @​nagisa
• @​evanj
• @​aquarhead

Commits

• 998f288 release 0.8.0
• edb1464 derive: Fix unstable fn name collision warning (#499)
• 4ae66cc Remove path type generic for better ergonomic (#496)
• 5d93c55 Bundled protoc only if the interpreter exists (#459)
• fdc319c prost-build lib.rs: Minor doc comment edits (#498)
• d8cb390 Add encode to Vec<u8> (#378)
• 59f2a73 Fix #438: Check for overflow in Duration and Timestamp processing (#439)
• 0833d46 Add afl fuzz tests (#272)
• c8691b7 Update repository & author references to tokio-rs (#489)
• 6cf97ea Update outdated dependencies (#474)
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)