Update Rust crate tarpc to v0.34.0

[hash-worker]

This PR contains the following updates:

Package	Type	Update	Change
tarpc	workspace.dependencies	minor	=0.33 -> =0.34.0

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Release Notes

google/tarpc (tarpc)

v0.34.0

Breaking Changes

• #[tarpc::server] is no more! Service traits now use async fns.
• Channel::execute no longer spawns request handlers. Async-fn-in-traits makes it impossible to
  add a Send bound to the future returned by Serve::serve. Instead, Channel::execute returns a
  stream of futures, where each future is a request handler. To achieve the former behavior:

  channel.execute(server.serve())
         .for_each(|rpc| { tokio::spawn(rpc); })

New Features

• Request hooks are added to the serve trait, so that it's easy to hook in cross-cutting
  functionality like throttling, authorization, etc.
• The Client trait is back! This makes it possible to hook in generic client functionality like load
  balancing, retries, etc.

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Configuration

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 20.22%. Comparing base (a4abfe0) to head (70221f0).
Report is 66 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5417      +/-   ##
==========================================
+ Coverage   20.21%   20.22%   +0.01%     
==========================================
  Files         508      508              
  Lines       17252    17257       +5     
  Branches     2537     2537              
==========================================
+ Hits         3487     3490       +3     
- Misses      13727    13729       +2     
  Partials       38       38              

Flag	Coverage Δ
apps.hash-ai-worker-ts	1.39% <ø> (ø)
apps.hash-api	1.19% <ø> (ø)
blockprotocol.type-system	48.46% <ø> (ø)
local.hash-backend-utils	8.81% <ø> (ø)
local.hash-isomorphic-utils	1.06% <ø> (ø)
local.hash-subgraph	24.32% <ø> (ø)
rust.deer	5.88% <ø> (ø)
rust.error-stack	73.06% <ø> (-0.03%)	⬇️
rust.sarif	87.66% <ø> (ø)

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[TimDiekmann]

Cannot upgrade until google/tarpc#421 is solved (we need the Send bound which is not possible when using async fn in the trait declarations.

[hash-worker]

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