Bump actions/download-artifact from 3 to 4 (#299)

.github/workflows/tests.yaml

@@ -41,11 +41,11 @@ jobs:
 
     - name: Build with Maven
       run: cd stackrox-container-image-scanner && ./mvnw -B verify package hpi:hpi cyclonedx:makeAggregateBom
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: stackrox-container-image-scanner.hpi
         path: stackrox-container-image-scanner/target/stackrox-container-image-scanner.hpi
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: stackrox-container-image-scanner.jar
         path: stackrox-container-image-scanner/target/stackrox-container-image-scanner.jar
@@ -79,11 +79,11 @@ jobs:
         curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key --keyring /usr/share/keyrings/cloud.google.gpg add -
         sudo apt-get update
         sudo apt-get install google-cloud-sdk-gke-gcloud-auth-plugin
-    - uses: actions/download-artifact@v3
+    - uses: actions/download-artifact@v4
       with:
         name: stackrox-container-image-scanner.hpi
         path: jenkins
-    - uses: actions/download-artifact@v3
+    - uses: actions/download-artifact@v4
       with:
         name: stackrox-container-image-scanner.hpi
         path: stackrox-container-image-scanner/target/