build(deps): bump actions/upload-artifact from 2 to 3

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2 to 3.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v2...v3)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/windows-installer.yml

@@ -58,7 +58,7 @@ jobs:
         run: ls etherpad_nsis
       -
         name: Archive production artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: etherpad-server-windows.exe
           path: etherpad_nsis/etherpad-server-windows.exe

.github/workflows/windows-zip.yml

@@ -44,7 +44,7 @@ jobs:
         run: src/bin/buildForWindows.sh
       -
         name: Archive production artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: etherpad-lite-win.zip
           path: etherpad-lite-win.zip