ci: Use taiki-e/checkout-action action

https://github.com/taiki-e/checkout-action#why-not-actionscheckout

Author: taiki-e

.github/workflows/ci.yml

@@ -48,7 +48,7 @@ jobs:
         os: [ubuntu-latest]
         rust: [nightly, beta, stable]
     steps:
-      - uses: actions/checkout@v4
+      - uses: taiki-e/checkout-action@v1
       - name: Install Rust
         run: rustup update ${{ matrix.rust }} && rustup default ${{ matrix.rust }}
       - run: rustup target add thumbv7m-none-eabi
@@ -80,15 +80,15 @@ jobs:
   msrv:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: taiki-e/checkout-action@v1
       - name: Install cargo-hack
         uses: taiki-e/install-action@cargo-hack
       - run: cargo hack build --feature-powerset --no-dev-deps --rust-version
 
   miri:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: taiki-e/checkout-action@v1
       - name: Install Rust
         run: rustup toolchain install nightly --component miri && rustup default nightly
       - run: cargo miri test

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
     if: github.repository_owner == 'smol-rs'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: taiki-e/checkout-action@v1
       - uses: taiki-e/create-gh-release-action@v1
         with:
           changelog: CHANGELOG.md