fix: update MSRV to 1.81.0

Some dependencies have 1.81.0 as MSRV, so bump to that version.

Signed-off-by: Ross Williams <[email protected]>

Author: overhacked

.github/workflows/ci.yml

@@ -54,7 +54,7 @@ jobs:
         include:
         - build: pinned
           os: ubuntu-latest
-          rust: 1.75.0
+          rust: 1.81.0
         - build: stable
           os: ubuntu-latest
           rust: stable

Cargo.toml

@@ -8,7 +8,7 @@ categories = ["command-line-utilities", "network-programming"]
 exclude = [".*"]
 version = "0.1.5" # bumped by release.sh
 edition = "2021"
-rust-version = "1.75.0"
+rust-version = "1.81.0"
 
 [dependencies]
 clap-serde-derive = "0.2.1"