Bump MSRV to 1.83.0

Update Minimum Supported Rust Version from 1.75.0 to 1.83.0 due to
dependency requirements (icu_collections v2.1.1 requires rustc 1.83+).

Updated in:
- Cargo.toml: rust-version field
- README.md: version badge and policy section
- CONTRIBUTING.md: prerequisites section
- .github/workflows/test.yaml: CI test matrix

Author: peteski22

.github/workflows/test.yaml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        rust: [stable, 1.75.0]
+        rust: [stable, 1.83.0]
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - uses: dtolnay/rust-toolchain@stable # Action's stable branch. No SHA pinning - repo doesn't publish releases.

CONTRIBUTING.md

@@ -17,7 +17,7 @@ Thank you for your interest in contributing to the Rust SDK for mcpd plugins!
 
 ### Prerequisites
 
-- Rust 1.75 or later
+- Rust 1.83 or later
 - `cargo` and `rustup`
 
 ### Install Development Tools

Cargo.toml

@@ -2,7 +2,7 @@
 name = "mcpd-plugins-sdk"
 version = "0.0.2"
 edition = "2021"
-rust-version = "1.75"
+rust-version = "1.83"
 authors = ["Mozilla AI"]
 license = "Apache-2.0"
 description = "Rust SDK for building mcpd plugins"

README.md

@@ -1,7 +1,7 @@
 # mcpd-plugins-sdk-rust
 
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](LICENSE)
-[![Rust Version](https://img.shields.io/badge/rust-1.75%2B-orange.svg)](https://www.rust-lang.org)
+[![Rust Version](https://img.shields.io/badge/rust-1.83%2B-orange.svg)](https://www.rust-lang.org)
 
 Rust SDK for building [mcpd](https://github.com/mozilla-ai/mcpd) (Mozilla Community Plugin Daemon) plugins.
 
@@ -387,7 +387,7 @@ PROTO_VERSION=v0.0.3 cargo build
 
 ## Rust Version Policy
 
-This crate requires Rust 1.75 or later. We follow a conservative MSRV policy and will clearly communicate any MSRV bumps.
+This crate requires Rust 1.83 or later. We follow a conservative MSRV policy and will clearly communicate any MSRV bumps.
 
 ## Contributing