Bump MSRV

Author: notgull

.github/workflows/ci.yml

@@ -112,7 +112,7 @@ jobs:
         os: [ubuntu-latest, windows-latest]
         # When updating this, the reminder to update the minimum supported
         # Rust version in Cargo.toml.
-        rust: ['1.48']
+        rust: ['1.63']
     steps:
       - uses: actions/checkout@v3
       - name: Install Rust

Cargo.toml

@@ -6,7 +6,7 @@ name = "async-io"
 version = "1.13.0"
 authors = ["Stjepan Glavina <[email protected]>"]
 edition = "2018"
-rust-version = "1.48"
+rust-version = "1.63"
 description = "Async I/O and timers"
 license = "Apache-2.0 OR MIT"
 repository = "https://github.com/smol-rs/async-io"