chore(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] <support@github.com>

.github/workflows/action-testing.yml

@@ -15,12 +15,12 @@ jobs:
     steps:
     - name: 🏠 Checkout locally
       if: ${{ env.ACT }}
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         path: check-new-commits-action
     - name: 💻 Checkout from GitHub
       if: ${{ !env.ACT }}
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: 🔄 Test the action with currrent repo content
       id: check-new-commits
       uses: ./

.github/workflows/release-action.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: 💻 Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         ref: master
         fetch-depth: 0

.github/workflows/unit-testing.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: 💻 Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: 🔨 Read .nvmrc
       id: read_nvmrc
       run: |