Use checkout v4

.github/workflows/ci.yml

@@ -16,7 +16,9 @@ jobs:
           - beta
           - nightly
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - name: Install Rust ${{ matrix.rust }}
         uses: actions-rs/toolchain@v1
         with:
@@ -42,7 +44,9 @@ jobs:
           - simple/simple
           - relaxed/relaxed
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - name: Apt update
         run: sudo apt update
       - name: Install Python
@@ -70,7 +74,9 @@ jobs:
     name: Cargo fmt
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
           components: rustfmt
@@ -80,13 +86,17 @@ jobs:
     name: Cargo deny
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: EmbarkStudios/cargo-deny-action@v1
   black:
     name: Black
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - name: Apt update
         run: sudo apt update
       - name: Install Python