chore(deps): bump actions/download-artifact from 3 to 4 (#5024)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v3...v4)

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

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

.github/workflows/build.yml

@@ -404,49 +404,49 @@ jobs:
         with:
           fetch-depth: 0 # allows for tags access
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         name: Ubuntu 22.04 Qt6.2.4 deb
         with:
           name: Chatterino-ubuntu-22.04-Qt-6.2.4.deb
           path: release-artifacts/
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         name: Windows Qt6.5.0
         with:
           name: chatterino-windows-x86-64-Qt-6.5.0.zip
           path: release-artifacts/
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         name: Windows Qt6.5.0 symbols
         with:
           name: chatterino-windows-x86-64-Qt-6.5.0-symbols.pdb.7z
           path: release-artifacts/
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         name: Windows Qt5.15.2
         with:
           name: chatterino-windows-x86-64-Qt-5.15.2.zip
           path: release-artifacts/
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         name: Linux Qt5.12.12 AppImage
         with:
           name: Chatterino-x86_64-5.12.12.AppImage
           path: release-artifacts/
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         name: Ubuntu 20.04 Qt5.12.12 deb
         with:
           name: Chatterino-ubuntu-20.04-Qt-5.12.12.deb
           path: release-artifacts/
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         name: Ubuntu 22.04 Qt5.15.2 deb
         with:
           name: Chatterino-ubuntu-22.04-Qt-5.15.2.deb
           path: release-artifacts/
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         name: macOS x86_64 Qt5.15.2 dmg
         with:
           name: chatterino-macos-Qt-5.15.2.dmg