Upgrade upload/download GitHub Actions (#2517)

Author: Kludex

.github/workflows/publish.yml

@@ -23,13 +23,13 @@ jobs:
         run: scripts/build
 
       - name: Upload package distributions
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: package-distributions
           path: dist/
 
       - name: Upload documentation
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: documentation
           path: site/
@@ -47,7 +47,7 @@ jobs:
 
     steps:
       - name: Download artifacts
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: package-distributions
           path: dist/
@@ -64,7 +64,7 @@ jobs:
 
     steps:
       - name: Download artifacts
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
         with:
           name: documentation
           path: site/