chore: raise MSRV to 1.75

To allow merging #5232
CC @SuperFluffy since you commented on #4692

Pull-Request: #5266.

Author: jxs

Cargo.toml

@@ -68,7 +68,7 @@ members = [
 resolver = "2"
 
 [workspace.package]
-rust-version = "1.73.0"
+rust-version = "1.75.0"
 
 [workspace.dependencies]
 asynchronous-codec = { version = "0.7.0" }

hole-punching-tests/Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1.5-labs
-FROM rust:1.73.0 as builder
+FROM rust:1.75.0 as builder
 
 # Run with access to the target cache to speed up builds
 WORKDIR /workspace

interop-tests/Dockerfile.chromium

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1.5-labs
-FROM rust:1.73.0 as chef
+FROM rust:1.75.0 as chef
 RUN rustup target add wasm32-unknown-unknown
 RUN wget -q -O- https://github.com/rustwasm/wasm-pack/releases/download/v0.12.1/wasm-pack-v0.12.1-x86_64-unknown-linux-musl.tar.gz | tar -zx -C /usr/local/bin --strip-components 1 --wildcards "wasm-pack-*/wasm-pack"
 RUN wget -q -O- https://github.com/WebAssembly/binaryen/releases/download/version_115/binaryen-version_115-x86_64-linux.tar.gz | tar -zx -C /usr/local/bin --strip-components 2 --wildcards "binaryen-version_*/bin/wasm-opt"

interop-tests/Dockerfile.native

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1.5-labs
-FROM lukemathwalker/cargo-chef:0.1.62-rust-1.73.0 as chef
+FROM lukemathwalker/cargo-chef:0.1.62-rust-1.75.0 as chef
 WORKDIR /app
 
 FROM chef AS planner

libp2p/CHANGELOG.md

@@ -3,6 +3,8 @@
 - Update individual crates.
     - Update to [`libp2p-kad` `v0.46.0`](protocols/kad/CHANGELOG.md#0460).
 
+- Raise MSRV to 1.73.
+  See [PR 5266](https://github.com/libp2p/rust-libp2p/pull/5266).
 
 ## 0.53.2