build(deps): bump actions/download-artifact from 6 to 7

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/pyinstaller.yml

@@ -152,7 +152,7 @@ jobs:
       - name: 'Checkout repository'
         uses: 'actions/checkout@v6'
       - name: 'Download PyInstaller artifact'
-        uses: 'actions/download-artifact@v6'
+        uses: 'actions/download-artifact@v7'
         with:
           name: open-in-mpv-binaries-win-x86_64
           path: dist
@@ -211,12 +211,12 @@ jobs:
       - name: 'Checkout repository'
         uses: 'actions/checkout@v6'
       - name: 'Download PyInstaller artifact (ARM64)'
-        uses: 'actions/download-artifact@v6'
+        uses: 'actions/download-artifact@v7'
         with:
           name: open-in-mpv-binaries-mac-arm64
           path: dist/arm64
       - name: 'Download PyInstaller artifact (x86_64)'
-        uses: 'actions/download-artifact@v6'
+        uses: 'actions/download-artifact@v7'
         with:
           name: open-in-mpv-binaries-mac-x86_64
           path: dist/x86_64