update download/upload artifact

Author: Emilgardis

.github/actions/cargo-publish/action.yml

@@ -21,7 +21,7 @@ runs:
 
     - name: Download artifacts
       id: download-artifacts
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         path:
           ${{ runner.temp }}/artifacts

.github/workflows/ci.yml

@@ -423,7 +423,7 @@ jobs:
         with:
           ref: ${{ inputs.checkout-ref }}
       - uses: ./.github/actions/setup-rust
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           path: ${{ runner.temp }}/artifacts
       - name: Grab PR number