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] <support@github.com>

.github/workflows/gnome-3-36.yml

@@ -16,7 +16,7 @@ jobs:
     container:
       image: andyholmes/gsconnect-ci:3.36
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Prepare
         run: |
           meson --prefix=/usr \

.github/workflows/gnome-3-38.yml

@@ -16,7 +16,7 @@ jobs:
     container:
       image: gsconnect/gsconnect-ci:3.38
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Prepare
         run: |
           meson --prefix=/usr \

.github/workflows/main.yml

@@ -17,7 +17,7 @@ jobs:
     container:
       image: ghcr.io/gsconnect/gsconnect-ci:main
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Prepare
         run: |
           meson --prefix=/usr \

.github/workflows/reuse.yml

@@ -17,6 +17,6 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: REUSE Compliance Check
         uses: fsfe/reuse-action@v2.0.0