ci: bump {upload,download}-artifact to non-deprecated version

The v4 versions need to be upgraded together. The older versions are deprecated.

Signed-off-by: Johannes Schindelin <[email protected]>

.github/workflows/build-and-test.yml

@@ -28,7 +28,7 @@ jobs:
         run: msbuild /m /p:PlatformToolset=${{env.BUILD_PLATFORM_TOOLSET}} /p:Platform=Win32 /p:Configuration=${{env.BUILD_CONFIGURATION}} src/dumplines.vcxproj
       - name: Upload bin/
         if: matrix.BUILD_PLATFORM == 'x64'
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: bin
           path: bin
@@ -37,7 +37,7 @@ jobs:
     needs: build
     steps:
       - name: Download bin/
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: bin
           path: bin