build(deps): bump actions/checkout from 4 to 5 (#18)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  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>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -75,7 +75,7 @@ jobs:
         egress-policy: audit
 
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Setup MPI
       id:   setup-mpi
@@ -159,7 +159,7 @@ jobs:
         egress-policy: audit
 
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Setup MPICH
       id:   setup1
@@ -201,7 +201,7 @@ jobs:
         egress-policy: audit
 
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Setup MPICH
       id:   setup1
@@ -236,7 +236,7 @@ jobs:
         egress-policy: audit
 
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Setup MPICH
       id:   setup1
@@ -282,7 +282,7 @@ jobs:
         egress-policy: audit
 
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Setup Intel MPI
       id:   setup1