Artifacts can't have colon in name

Author: smistad

.github/workflows/build_build_image.yaml

@@ -36,7 +36,7 @@ jobs:
       - name: Upload docker image file as artifact
         uses: actions/upload-artifact@v4
         with:
-          name: ${{ env.IMAGE_NAME }}
+          name: ${{ env.IMAGE_FILENAME }}
           path: ${{ env.IMAGE_FILENAME }}
           if-no-files-found: error
           retention-days: 3

.github/workflows/build_runtime_images.yaml

@@ -66,7 +66,7 @@ jobs:
       - name: Upload docker image file as artifact
         uses: actions/upload-artifact@v4
         with:
-          name: ${{ env.IMAGE_NAME }}
+          name: ${{ env.IMAGE_FILENAME }}
           path: ${{ env.IMAGE_FILENAME }}
           if-no-files-found: error
           retention-days: 3