ci: bump the toolchain version

Signed-off-by: TennyZhuang <zty0826@gmail.com>

Author: TennyZhuang

.github/workflows/rust.yml

@@ -50,7 +50,7 @@ jobs:
           thumbv6m-none-eabi,
           x86_64-pc-windows-gnu,
         ]
-        channel: [1.58.1, nightly]
+        channel: [1.61.0, nightly]
         include:
         - os: macos-latest
           target: x86_64-apple-darwin
@@ -60,13 +60,13 @@ jobs:
           channel: nightly
         - os: macos-latest
           target: x86_64-apple-darwin
-          channel: 1.58.1
+          channel: 1.61.0
         - os: windows-latest
           target: x86_64-pc-windows-msvc
-          channel: 1.58.1
+          channel: 1.61.0
         - os: ubuntu-latest
           target: x86_64-unknown-linux-gnu
-          channel: 1.56.1
+          channel: 1.61.0
         - os: ubuntu-latest
           target: x86_64-unknown-linux-gnu
           channel: beta

README.md

@@ -4,7 +4,7 @@ hashbrown
 [![Build Status](https://github.com/rust-lang/hashbrown/actions/workflows/rust.yml/badge.svg)](https://github.com/rust-lang/hashbrown/actions)
 [![Crates.io](https://img.shields.io/crates/v/hashbrown.svg)](https://crates.io/crates/hashbrown)
 [![Documentation](https://docs.rs/hashbrown/badge.svg)](https://docs.rs/hashbrown)
-[![Rust](https://img.shields.io/badge/rust-1.56.1%2B-blue.svg?maxAge=3600)](https://github.com/rust-lang/hashbrown)
+[![Rust](https://img.shields.io/badge/rust-1.61.0%2B-blue.svg?maxAge=3600)](https://github.com/rust-lang/hashbrown)
 
 This crate is a Rust port of Google's high-performance [SwissTable] hash
 map, adapted to make it a drop-in replacement for Rust's standard `HashMap`