chore(workflows): update upload-artifact to v4 as v3 deprecated (#230)

Author: CorieW

.github/workflows/ci.yaml

@@ -76,7 +76,7 @@ jobs:
           source venv/bin/activate
           mkdir ./docs/build
           ./docs/generate.sh --out=./docs/build/ --pypath=src/
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         name: Upload Docs Preview
         with:
           name: reference-docs

.github/workflows/release.yaml

@@ -59,7 +59,7 @@ jobs:
     # Attach the packaged artifacts to the workflow output. These can be manually
     # downloaded for later inspection if necessary.
     - name: Archive artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: dist
         path: dist/