fix(deps): update grpc packages to 0.12.4 (#551)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [prost](https://togithub.com/tokio-rs/prost) | dependencies | patch |
`0.12` -> `0.12.4` |
| [prost-types](https://togithub.com/tokio-rs/prost) | dependencies |
patch | `0.12` -> `0.12.4` |

---

### Release Notes

<details>
<summary>tokio-rs/prost (prost)</summary>

###
[`v0.12.4`](https://togithub.com/tokio-rs/prost/releases/tag/v0.12.4)

[Compare
Source](https://togithub.com/tokio-rs/prost/compare/v0.12.3...v0.12.4)

*PROST!* is a [Protocol
Buffers](https://developers.google.com/protocol-buffers/) implementation
for the [Rust Language](https://www.rust-lang.org/). `prost` generates
simple, idiomatic Rust code from `proto2` and `proto3` files.

This patch update brings new features and fixes:

-   Bump MSRV to 1.70 (minimum supported Rust version)
- Rename cargo feature `prost-derive` to `derive`
([#&#8203;992](https://togithub.com/tokio-rs/prost/issues/992))
- Add [@&#8203;generated](https://togithub.com/generated) comment on top
of generated files
([#&#8203;935](https://togithub.com/tokio-rs/prost/issues/935))
- Optimize implementation of prost::Name when generated by prost-build
([#&#8203;956](https://togithub.com/tokio-rs/prost/issues/956))

##### Dependencies

- build(deps): Allow itertools 0.12
([#&#8203;948](https://togithub.com/tokio-rs/prost/issues/948))
- build(deps): Allow heck 0.5
([#&#8203;1012](https://togithub.com/tokio-rs/prost/issues/1012))
- build(deps): Allow multimap 0.10
([#&#8203;1013](https://togithub.com/tokio-rs/prost/issues/1013))

##### Documentation

- Improve protoc not found error message
([#&#8203;937](https://togithub.com/tokio-rs/prost/issues/937))
- build: Add development container config
([#&#8203;949](https://togithub.com/tokio-rs/prost/issues/949))
- docs: Fixed README typos
([#&#8203;952](https://togithub.com/tokio-rs/prost/issues/952) /
[#&#8203;967](https://togithub.com/tokio-rs/prost/issues/967) /
[#&#8203;970](https://togithub.com/tokio-rs/prost/issues/970))

##### Internal

- chore: Fix minimal versions
([#&#8203;920](https://togithub.com/tokio-rs/prost/issues/920))
- fix: fq_message_name should begin with one dot
([#&#8203;981](https://togithub.com/tokio-rs/prost/issues/981))
- improve encode_varint performance by bounding its loop
([#&#8203;940](https://togithub.com/tokio-rs/prost/issues/940))
- style: Remove duplicate function call
([#&#8203;989](https://togithub.com/tokio-rs/prost/issues/989))
- test: Improve test decode_varint_slow
([#&#8203;977](https://togithub.com/tokio-rs/prost/issues/977))
- chore: Add dep: prefix to feature dependencies
([#&#8203;919](https://togithub.com/tokio-rs/prost/issues/919))
- Minor clippy lint fixes.
([#&#8203;1006](https://togithub.com/tokio-rs/prost/issues/1006))
- chore: Use taiki-e/install-action to setup cargo-machete
([#&#8203;909](https://togithub.com/tokio-rs/prost/issues/909))
- chore: Remove which dependency.
([#&#8203;962](https://togithub.com/tokio-rs/prost/issues/962))
- chore: Update to actions/checkout@v4
([#&#8203;910](https://togithub.com/tokio-rs/prost/issues/910))

###
[`v0.12.3`](https://togithub.com/tokio-rs/prost/releases/tag/v0.12.3)

[Compare
Source](https://togithub.com/tokio-rs/prost/compare/v0.12.2...v0.12.3)

*PROST!* is a [Protocol
Buffers](https://developers.google.com/protocol-buffers/) implementation
for the [Rust Language](https://www.rust-lang.org/). `prost` generates
simple, idiomatic Rust code from `proto2` and `proto3` files.

This patch updates brings a few new fixes:

- [Fix code generation for Name trait
(](https://togithub.com/tokio-rs/prost/commit/acc1df83f73cda03c10722fbb739c7920b6b9048)[https://github.com/tokio-rs/prost/pull/944](https://togithub.com/tokio-rs/prost/pull/944)[)](https://togithub.com/tokio-rs/prost/commit/acc1df83f73cda03c10722fbb739c7920b6b9048)

###
[`v0.12.2`](https://togithub.com/tokio-rs/prost/releases/tag/v0.12.2)

[Compare
Source](https://togithub.com/tokio-rs/prost/compare/v0.12.1...v0.12.2)

*PROST!* is a [Protocol
Buffers](https://developers.google.com/protocol-buffers/) implementation
for the [Rust Language](https://www.rust-lang.org/). `prost` generates
simple, idiomatic Rust code from `proto2` and `proto3` files.

This patch updates brings a few new features and fixes:

- feat: Generate implementation for Name trait
([https://github.com/tokio-rs/prost/pull/931](https://togithub.com/tokio-rs/prost/pull/931))
- fix: generate Name::full_name properly
([https://github.com/tokio-rs/prost/pull/923](https://togithub.com/tokio-rs/prost/pull/923))

###
[`v0.12.1`](https://togithub.com/tokio-rs/prost/compare/v0.12.0...v0.12.1)

[Compare
Source](https://togithub.com/tokio-rs/prost/compare/v0.12.0...v0.12.1)

</details>

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Cargo.toml

@@ -65,8 +65,8 @@ document-features = { version = "0.2.8", optional = true }
 jsonwebtoken = { version = "9.3.0", optional = true }
 openidconnect = { version = "3.5.0", optional = true }
 pbjson-types = { version = "0.6", optional = true }
-prost = { version = "0.12", optional = true }
-prost-types = { version = "0.12", optional = true }
+prost = { version = "0.12.4", optional = true }
+prost-types = { version = "0.12.4", optional = true }
 reqwest = { version = "0.11.27", features = ["json", "rustls-tls"], default-features = false, optional = true }
 rocket = { version = "0.5.0", optional = true }
 serde = { version = "1.0", features = ["derive"], optional = true }