ci: publish the wheel as a non-zipped artifact for direct download

Bump actions/upload-artifact v4 -> v7 and set archive: false so the built wheel
downloads directly from a run's Artifacts page instead of inside a
GitHub-generated .zip wrapper. With archive: false the artifact takes the
wheel's own filename (e.g. cefpython3-147.0.devN+g<hash>-cpXX-...-<platform>.whl),
so the exact version is visible without extracting. Non-zipped uploads require
upload-artifact v7+.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: linesight

.github/workflows/ci-linux.yml

@@ -138,7 +138,7 @@ jobs:
           xvfb-run python unittests/_test_runner.py
 
       - name: Upload wheel artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
-          name: cefpython3-py${{ matrix.python-version }}-linux64
           path: build/dist/*.whl
+          archive: false

.github/workflows/ci-macos.yml

@@ -154,7 +154,7 @@ jobs:
           python unittests/_test_runner.py
 
       - name: Upload wheel artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
-          name: cefpython3-py${{ matrix.python-version }}-macosarm64
           path: build/dist/*.whl
+          archive: false

.github/workflows/ci-windows.yml

@@ -120,7 +120,7 @@ jobs:
           python unittests/_test_runner.py
 
       - name: Upload wheel artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
-          name: cefpython3-py${{ matrix.python-version }}-win64
           path: build/dist/*.whl
+          archive: false