Upgrade Rust version to 1.80.1

Upgrade Rust version to ensure the CI build passes.

Author: mjgarton

.github/workflows/ci.yml

@@ -76,6 +76,6 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions-rs/toolchain@v1
       with:
-        toolchain: "1.79"
+        toolchain: "1.80.1"
         override: true
     - run: cargo build --all-features