Bump the all group with 2 updates (#526)

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


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

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

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/test.yml

@@ -106,7 +106,7 @@ jobs:
       #   nightly ViperTool releases AND the ViperTools that should be released.
       - name: Download ViperTools to test against (only downloading previously created ViperTools)
         if: ${{ contains(needs.create-viper-tools.result, 'success') }}
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: ViperTools
           path: client/ViperTools
@@ -191,7 +191,7 @@ jobs:
 
       - name: Upload Viper-IDE log files
         if: ${{ failure() || cancelled() }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: TestLogs-${{ matrix.target }}
           path: client/logs
@@ -229,7 +229,7 @@ jobs:
         working-directory: client
 
       - name: Upload packaged Viper-IDE
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: viper-ide-${{ matrix.target }}.vsix
           path: client/viper-ide-${{ matrix.target }}.vsix
@@ -246,7 +246,7 @@ jobs:
         working-directory: client/dependencies/ViperTools
 
       - name: Upload ViperTools zip files
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: ${{ matrix.viper-tools-zip-file }}
           path: client/dependencies/${{ matrix.viper-tools-zip-file }}
@@ -263,14 +263,14 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Download packaged Viper IDE
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           pattern: viper-ide-*.vsix
           merge-multiple: true
           path: client
 
       - name: Download ViperTools
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           pattern: ViperTools*.zip
           merge-multiple: true