ci: replace unmaintained action-rs (pubgrub-rs#166)

* Update check_formatting ci job

* Update clippy ci job

* Update test ci job (no cache)

* Update check_documentation ci job (no cache)

Author: mpizenberg

.github/workflows/ci.yml

@@ -14,47 +14,19 @@ jobs:
     name: Tests pass
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - name: Install stable Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          profile: minimal
-
-      - name: Get Cargo version
-        id: cargo_version
-        run: echo "::set-output name=version::$(cargo -V | tr -d ' ')"
-        shell: bash
-
-      - name: Download cache
-        uses: actions/cache@v2
-        with:
-          path: |
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: ${{ runner.os }}-${{ steps.cargo_version.outputs.version }}-${{ hashFiles('Cargo.toml') }}
-          restore-keys: ${{ runner.os }}-${{ steps.cargo_version.outputs.version }}
-
-      - name: Build
-        run: cargo build --verbose
-
-      - name: Run tests
-        run: cargo test --features=serde --verbose
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cargo build --verbose
+      - run: cargo test --features=serde --verbose
 
   clippy:
     name: No warnings from Clippy
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - name: Install stable Rust
-        uses: actions-rs/toolchain@v1
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
         with:
-          toolchain: stable
-          profile: minimal
           components: clippy
-
       - name: Check Clippy lints
         env:
           RUSTFLAGS: -D warnings
@@ -64,38 +36,18 @@ jobs:
     name: Source code is formatted
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - name: Install stable Rust
-        uses: actions-rs/toolchain@v1
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
         with:
-          toolchain: stable
-          profile: minimal
           components: rustfmt
-
-      - name: Check formatting
-        run: cargo fmt --all -- --check
+      - run: cargo fmt --all -- --check
 
   check_documentation:
     name: Documentation builds successfully
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - name: Install nightly Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly
-          profile: minimal
-
-      - name: Download cache
-        uses: actions/cache@v2
-        with:
-          path: |
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: documentation
-
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
       - name: Check documentation
         env:
           RUSTDOCFLAGS: -D warnings