build(deps): bump the github-actions-dependencies group with 2 updates

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


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/download-artifact` from 5 to 6
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions-dependencies
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/doc-build.yml

@@ -36,7 +36,7 @@ jobs:
           poetry run make clean html
         working-directory: docs
       - name: Upload documentation artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: hpcflow-documentation (${{ github.sha }})
           path: docs/build/html

.github/workflows/generate_test_programs.yml

@@ -60,7 +60,7 @@ jobs:
         shell: bash
 
       - name: Upload `hello_world` artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: hello_world_${{ runner.os }}${{ runner.os == 'Windows' && '.exe' || '' }}
           path: hpcflow/data/programs/hello_world/hello_world${{ runner.os == 'Windows' && '.exe' || '' }}

.github/workflows/release_testing.yml

@@ -79,7 +79,7 @@ jobs:
         run: ./compress.sh hpcflow-release-test-build-${{ matrix.executable_os }}-dir onedir
 
       - name: Upload compressed artifact (folder)
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: hpcflow-release-test-build-${{ matrix.executable_os }}-dir.zip
           path: pyinstaller/dist/onedir/hpcflow-release-test-build-${{ matrix.executable_os }}-dir.zip
@@ -118,13 +118,13 @@ jobs:
         run: ./make.sh hpcflow-release-test-build-linux-dir INFO onedir
 
       - name: Upload executable artifact (file)
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: hpcflow-release-test-build-linux
           path: pyinstaller/dist/onefile/hpcflow-release-test-build-linux
 
       - name: Upload executable artifact (folder)
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: hpcflow-release-test-build-linux-dir
           path: pyinstaller/dist/onedir/hpcflow-release-test-build-linux-dir
@@ -139,11 +139,11 @@ jobs:
 
       - run: mkdir release-artifacts
 
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         id: download_executables_I
         with:
           name: hpcflow-release-test-build-macOS-dir.zip
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         id: download_executables_II
         with:
           name: hpcflow-release-test-build-win-dir.zip
@@ -163,7 +163,7 @@ jobs:
 
       - run: mkdir release-artifacts
 
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         id: download_executables
         with:
           path: release-artifacts