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

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

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

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

.github/workflows/main.yml

@@ -181,7 +181,7 @@ jobs:
         with:
           export-templates: true
       - name: Install binary build artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: libgodot-xterm-release
           path: addons/godot_xterm/native/bin
@@ -246,7 +246,7 @@ jobs:
           version: ${{ matrix.godot_version }}
           bits: ${{ matrix.bits }}
       - name: Install binary build artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: libgodot-xterm-release
           path: addons/godot_xterm/native/bin