Bump MSRV to 1.67

`time 0.3.35` has MSRV 1.67, and is a required update in order to fix
breakage on Rust 1.80 and above.

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to Rust's notion of
 to 0.3.0 are beta releases.
 
 ## [Unreleased]
+### Changed
+- MSRV is now 1.67.0.
 
 ## [0.4.0] - 2023-04-09
 ### Changed

Cargo.toml

@@ -9,7 +9,7 @@ keywords = ["age", "cli", "encryption", "yubikey"]
 categories = ["command-line-utilities", "cryptography"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.65" # MSRV
+rust-version = "1.67" # MSRV
 
 [package.metadata.deb]
 extended-description = """\

README.md

@@ -8,7 +8,7 @@ which enables files to be encrypted to age identities stored on YubiKeys.
 
 | Environment | CLI command |
 |-------------|-------------|
-| Cargo (Rust 1.65+) | `cargo install age-plugin-yubikey` |
+| Cargo (Rust 1.67+) | `cargo install age-plugin-yubikey` |
 | Homebrew (macOS or Linux) | `brew install age-plugin-yubikey` |
 | Arch Linux | `pacman -S age-plugin-yubikey` |
 | Debian | [Debian package](https://github.com/str4d/age-plugin-yubikey/releases) |

rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.65.0"
+channel = "1.67.0"
 components = ["clippy", "rustfmt"]