Update GitHub Actions versions

Author: kornelski

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
     name: rustfmt
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v5
       - uses: sfackler/actions/rustup@master
       - uses: sfackler/actions/rustfmt@master
 
@@ -32,25 +32,25 @@ jobs:
     name: test-${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v5
       - uses: sfackler/actions/rustup@master
         with:
           version: 1.80.0
       - run: echo "::set-output name=version::$(rustc --version)"
         id: rust-version
-      - uses: actions/cache@v1
+      - uses: actions/cache@v4
         with:
           path: ~/.cargo/registry/index
           key: index-${{ runner.os }}-${{ github.run_number }}
           restore-keys: |
             index-${{ runner.os }}-
       - run: cargo generate-lockfile
-      - uses: actions/cache@v1
+      - uses: actions/cache@v4
         with:
           path: ~/.cargo/registry/cache
           key: registry-${{ runner.os }}-${{ steps.rust-version.outputs.version }}-${{ hashFiles('Cargo.lock') }}
       - run: cargo fetch
-      - uses: actions/cache@v1
+      - uses: actions/cache@v4
         with:
           path: target
           key: target-${{ runner.os }}-${{ steps.rust-version.outputs.version }}-${{ hashFiles('Cargo.lock') }}