Bump actions/checkout from 4 to 5

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] <[email protected]>

Author: dependabot[bot]

.github/workflows/BuildPR.yml

@@ -21,7 +21,7 @@ jobs:
         qt: [ 5 ]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
           submodules: true
@@ -79,7 +79,7 @@ jobs:
     runs-on: ${{ matrix.ubuntu }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
           submodules: true
@@ -108,7 +108,7 @@ jobs:
     runs-on: windows-2022
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
           submodules: true
@@ -142,7 +142,7 @@ jobs:
 
     steps:
     - name: Checkout source
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Install Qt 6 (Framework build)
       uses: jurplel/install-qt-action@v4
@@ -223,7 +223,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/')
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
           submodules: true