ci: Consistently use actions/checkout@v4

Author: waywardmonkeys

.github/workflows/bindgen.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install stable
         uses: actions-rs/toolchain@v1
@@ -43,7 +43,7 @@ jobs:
   msrv:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install msrv for lib
         uses: dtolnay/rust-toolchain@master
@@ -70,7 +70,7 @@ jobs:
     env:
       RUSTFLAGS: -D warnings
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install stable
         uses: actions-rs/toolchain@v1
@@ -87,7 +87,7 @@ jobs:
     env:
       RUSTDOCFLAGS: -D warnings
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install stable
         uses: actions-rs/toolchain@v1
@@ -105,7 +105,7 @@ jobs:
   quickchecking:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install stable
         uses: actions-rs/toolchain@v1
@@ -124,7 +124,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-12]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install stable
         uses: actions-rs/toolchain@v1
@@ -187,7 +187,7 @@ jobs:
             no_default_features: 0
             feature_extra_asserts: 0
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install multiarch packages
         if: matrix.target.debian
@@ -234,7 +234,7 @@ jobs:
     env:
       RUSTFLAGS: -D warnings
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install nightly
         uses: actions-rs/toolchain@v1
@@ -249,7 +249,7 @@ jobs:
   test-book:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # NOTE(emilio): Change deploy-book as well if you change this.
       - name: Test book

.github/workflows/deploy-book.yml

@@ -9,7 +9,7 @@ jobs:
   deploy-book:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           persist-credentials: false
 

.github/workflows/publish.yml

@@ -13,7 +13,7 @@ jobs:
     if: ${{ github.event.workflow_run.conclusion == 'success' }}
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install stable toolchain
         uses: dtolnay/rust-toolchain@master
         with: