Bump actions/checkout from 2 to 4

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>

.github/workflows/Eval.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - name: Check out repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       # Set up Julia
       - name: "Set up Julia"

.github/workflows/TestLTS.yml

@@ -29,7 +29,7 @@ jobs:
     steps:
       # Checks-out your repository
       - name: Check out repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Set up Julia
       - name: "Set up Julia"

.github/workflows/TestLatest.yml

@@ -29,7 +29,7 @@ jobs:
     steps:
       # Checks-out your repository
       - name: Check out repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Set up Julia
       - name: "Set up Julia"