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](https://github.com/actions/checkout/compare/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/ci.yml

@@ -35,7 +35,7 @@ jobs:
 
     steps:
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Test shell scripts
       if: matrix.otp == '25.3'

.github/workflows/container.yml

@@ -24,7 +24,7 @@ jobs:
       packages: write
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -75,7 +75,7 @@ jobs:
           mv ejabberd-*.tar.gz tarballs
 
       - name: Checkout ejabberd-contrib
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: processone/ejabberd-contrib
           path: .ejabberd-modules/sources/ejabberd-contrib

.github/workflows/installers.yml

@@ -41,7 +41,7 @@ jobs:
           gem install --no-document --user-install fpm
           echo $HOME/.local/share/gem/ruby/*/bin >> $GITHUB_PATH
       - name: Check out repository code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Build binary archives

.github/workflows/runtime.yml

@@ -42,7 +42,7 @@ jobs:
 
     steps:
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Prepare libraries
       run: |
@@ -132,7 +132,7 @@ jobs:
 
     steps:
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Get specific Erlang/OTP
       uses: erlef/setup-beam@v1