Update GitHub workflows (#31)

Author: DLu

.github/workflows/main.yaml

@@ -20,6 +20,7 @@ jobs:
         - '3.10'
         - '3.11'
         - '3.12'
+        - '3.13'
     name: Check Python ${{ matrix.python-version }}
     steps:
     - uses: actions/checkout@v4

.github/workflows/publish_pip.yaml

@@ -15,7 +15,7 @@ jobs:
     - name: Build SDist and wheel
       run: pipx run build
 
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         path: dist/*
 
@@ -31,7 +31,7 @@ jobs:
     if: github.event_name == 'release' && github.event.action == 'published'
 
     steps:
-    - uses: actions/download-artifact@v3
+    - uses: actions/download-artifact@v4
       with:
         name: artifact
         path: dist