build(deps): bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/CI.yml

@@ -60,7 +60,7 @@ jobs:
               test_sys: false,
             }
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: ${{ matrix.rust }}
@@ -87,7 +87,7 @@ jobs:
     container:
       image: ghcr.io/gtk-rs/gtk4-rs/gtk4:latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
@@ -103,7 +103,7 @@ jobs:
     name: rustfmt
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
@@ -119,7 +119,7 @@ jobs:
     name: regen checker
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: "recursive"
           set-safe-directory: true
@@ -136,7 +136,7 @@ jobs:
     name: docs embed check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
           set-safe-directory: true
@@ -165,8 +165,8 @@ jobs:
           - { name: "gdk4-win32", is_macros_crate: false }
           - { name: "gtk4-macros", is_macros_crate: true }
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4
         with:
           repository: gtk-rs/checker
           ref: master

.github/workflows/book.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-22.04
     name: build
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal

.github/workflows/docs.yml

@@ -43,7 +43,7 @@ jobs:
         0.3=0.3
       RUSTFLAGS: --cfg docsrs
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: "recursive"
           set-safe-directory: true

.github/workflows/image.yml

@@ -18,7 +18,7 @@ jobs:
   docker:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Push to GitHub Packages
         uses: docker/build-push-action@v1
         with:

.github/workflows/listings.yml

@@ -19,7 +19,7 @@ jobs:
     container:
       image: ghcr.io/gtk-rs/gtk4-rs/gtk4:latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal

.github/workflows/macos.yml

@@ -23,7 +23,7 @@ jobs:
     name: macOS
     runs-on: macos-12
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install GTK
         run: |

.github/workflows/typos.yml

@@ -10,6 +10,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Actions Repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Check spelling
         uses: crate-ci/typos@master

.github/workflows/windows-msvc.yml

@@ -28,7 +28,7 @@ jobs:
       PKG_CONFIG_PATH: 'C:\gnome\lib\pkgconfig'
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/cache@v3
         id: cache
         with: