chore: refresh GitHub repository setup (#23)

* chore: refresh GitHub repository setup

* chore: align CI with Rust 1.88 MSRV

.github/workflows/test.yml

@@ -6,12 +6,15 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   cargo-test:
     name: cargo test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-      - uses: Swatinem/rust-cache@v2
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@1.88.0
+      - uses: Swatinem/rust-cache@v2.9.1
       - run: cargo test