deps: bump actions/upload-artifact from 4 to 5

Bumps [actions/upload-artifact](https://github.com/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/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/pr-check.yml

@@ -58,7 +58,7 @@ jobs:
         run: npm run vsce:package
 
       - name: Upload Extension
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: languague-renpy-package
           path: "**/*.vsix"
@@ -104,15 +104,15 @@ jobs:
 
       - name: Upload JSON Test Results
         if: ${{ !cancelled() }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: test-results.json
           path: vscode-language-renpy-test-results.json
           retention-days: 7
 
       - name: Upload JUnit Test Results
         if: ${{ !cancelled() }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: test-results.xml
           path: vscode-language-renpy-test-results.xml