Use v4 for upload-artifacts (#81)

Co-authored-by: Genevieve Nuebel <genevieve.nuebel@mx.com>

Author: Gvieve

.github/workflows/openapi-generate-and-push.yml

@@ -88,7 +88,7 @@ jobs:
             -t ./openapi/templates \
             -o ./${{ matrix.api_version }}
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: generated-${{ matrix.api_version }}
           path: ./${{ matrix.api_version }}
@@ -99,7 +99,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Download all artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: ./generated
       - name: Move generated files and track versions