Bump actions/checkout from 5 to 6 in the all-github-actions group (#923)

Bumps the all-github-actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 5 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-github-actions
...

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/Documenter.yml

@@ -25,7 +25,7 @@ jobs:
   docs-build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: '1'

.github/workflows/Invalidations.yml

@@ -23,7 +23,7 @@ jobs:
       with:
         version: '1'
     # current branch
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: add MPIPreferences
       shell: julia --color=yes --project=. {0}
       run: |
@@ -35,7 +35,7 @@ jobs:
       id: invs_pr
 
     # default branch
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         ref: ${{ github.event.repository.default_branch }}
     - name: add MPIPreferences

.github/workflows/PreviewCleanup.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout gh-pages branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: gh-pages
       - name: Delete preview and history + push changes

.github/workflows/ShellCheck.yml

@@ -22,7 +22,7 @@ jobs:
   shellcheck:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         run: sudo apt install shellcheck
       - name: Check scripts

.github/workflows/UnitTests.yml

@@ -55,7 +55,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - uses: julia-actions/setup-julia@v2
       with:
@@ -109,7 +109,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - uses: julia-actions/setup-julia@v2
       with:
@@ -164,7 +164,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Install MPI via homebrew
       run: |
@@ -218,7 +218,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Install MPI via apt
       run: |
@@ -268,7 +268,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - uses: julia-actions/setup-julia@v2
       with:
@@ -303,7 +303,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Download Microsoft MPI
       run: (new-object net.webclient).DownloadFile("https://download.microsoft.com/download/a/5/2/a5207ca5-1203-491a-8fb8-906fd68ae623/msmpisetup.exe", "msmpisetup.exe")
@@ -367,7 +367,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - uses: julia-actions/setup-julia@v2
       with:
@@ -423,7 +423,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Install MPI via apt
       run: |
@@ -488,7 +488,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set MPITRAMPOLINE_MPIEXEC
       run: echo "MPITRAMPOLINE_MPIEXEC=$(which mpiexec)" >> "${GITHUB_ENV}"
@@ -560,7 +560,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - uses: julia-actions/setup-julia@v2
       with: