Bump actions/checkout from 3 to 4

.github/workflows/checks.yml

@@ -26,7 +26,7 @@ jobs:
         action: [clippy, fmt, nextest]
     steps:
       - name: Fetch latest code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup build environment
         if: matrix.action != 'fmt'
         run: rustup show

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
           ]
     steps:
       - name: Fetch latest code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Rust toolchain
         run: rustup target add ${{ matrix.target.name }}
       - name: Build
@@ -73,7 +73,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Fetch latest code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Login
         run: cargo login ${{ secrets.CARGO_REGISTRY_TOKEN }}
       - name: Publish

.github/workflows/staging.yml

@@ -23,7 +23,7 @@ jobs:
           ]
     steps:
       - name: Fetch latest code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Rust toolchain
         run: rustup target add ${{ matrix.target.name }}
       - name: Build
@@ -65,7 +65,7 @@ jobs:
   #   runs-on: ubuntu-latest
   #   steps:
   #     - name: Fetch latest code
-  #       uses: actions/checkout@v3
+  #       uses: actions/checkout@v4
   #     - name: Login
   #       run: cargo login ${{ secrets.CARGO_REGISTRY_TOKEN }}
   #     - name: Publish