bugfix: set distinct artifact upload names

.github/workflows/build.yml

@@ -115,7 +115,7 @@ jobs:
       - name: upload images
         uses: actions/upload-artifact@v4
         with:
-          name: seedsigner_os_images
+          name: seedsigner_os_images-${{ matrix.target }}
           path: "seedsigner-os/images/*.img"
           if-no-files-found: error
           # maximum 90 days retention
@@ -150,7 +150,7 @@ jobs:
       - name: upload checksums
         uses: actions/upload-artifact@v4
         with:
-          name: seedsigner_os_images
+          name: seedsigner_os_hashes-${{ matrix.target }}
           path: "images/*.sha256"
           if-no-files-found: error
           # maximum 90 days retention

.github/workflows/tests.yml

@@ -65,7 +65,7 @@ jobs:
       - name: Archive CI Artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: ci-artifacts
+          name: ci-artifacts-${{ matrix.python-version }}
           path: artifacts/**
           retention-days: 10
         # Upload also when tests fail. The workflow result (red/green) will