Bump the github-actions group across 1 directory with 2 updates

Bumps the github-actions group with 2 updates in the / directory: [actions/upload-artifact](https://github.com/actions/upload-artifact) and [actions/checkout](https://github.com/actions/checkout).


Updates `actions/upload-artifact` from 4 to 5
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

Updates `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/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/fuzz.yml

@@ -24,7 +24,7 @@ jobs:
         fuzz-seconds: 600
         dry-run: false
     - name: Upload Crash
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v5
       if: failure() && steps.build.outcome == 'success'
       with:
         name: artifacts

.github/workflows/tests.yml

@@ -10,7 +10,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: ./scripts/clang-format-check
 
   autotools:
@@ -25,7 +25,7 @@ jobs:
     steps:
       - if: ${{runner.os == 'macOS'}}
         run: brew install autoconf automake libtool
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: autoreconf -fi
       - env:
           CC: ${{ matrix.cc }}
@@ -50,7 +50,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - env:
           CC: ${{matrix.cc}}
         run: cmake .
@@ -60,7 +60,7 @@ jobs:
   valgrind:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: sudo apt update && sudo apt install valgrind
       - run: cmake -DJANSSON_TEST_WITH_VALGRIND=ON .
       - run: cmake --build .