chore(deps): update github artifact actions

Author: renovate[bot]

.github/workflows/apollo.yaml

@@ -37,7 +37,7 @@ jobs:
           PORT: 4000
       - name: Introspect schema
         run: rover subgraph introspect http://localhost:4000 > ${{ env.SCHEMA_FILE }}
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v5
         with:
           path: ${{ env.SCHEMA_FILE }}
           name: ${{ env.SCHEMA_ARTIFACT }}

.github/workflows/checks.yaml

@@ -16,7 +16,7 @@ jobs:
     needs: [ prepare_schema ]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: ${{ needs.prepare_schema.outputs.schema_artifact }}
       - name: Install Rover

.github/workflows/deploy.yaml

@@ -22,7 +22,7 @@ jobs:
     needs: [ deploy, prepare_schema ]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           name: ${{ needs.prepare_schema.outputs.schema_artifact }}
       - name: Install Rover