Bump actions/checkout from 2 to 4 (#30)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yaml

@@ -53,7 +53,7 @@ jobs:
         run: git config --system core.longpaths true
 
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: 'true'
 

.github/workflows/pullrequest.yaml

@@ -21,7 +21,7 @@ jobs:
         run: git config --system core.longpaths true
 
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it                                                                                  
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: 'true'
 

.github/workflows/release.yaml

@@ -23,7 +23,7 @@ jobs:
         run: git config --system core.longpaths true
 
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it                                                                                  
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           submodules: 'true'