CI: use git commit sha in name

Signed-off-by: Peter van Dijk <peter.van.dijk@powerdns.com>
(cherry picked from commit bbf983721c)

.github/workflows/multi-arch-test-build.yml

@@ -72,13 +72,13 @@ jobs:
       - name: Store packages
         uses: actions/upload-artifact@v2
         with:
-          name: ${{ matrix.arch}}-packages
+          name: ${{ matrix.arch}}-${{ github.sha}}-packages
           path: "*.ipk"
 
       - name: Store logs
         uses: actions/upload-artifact@v2
         with:
-          name: ${{ matrix.arch}}-logs
+          name: ${{ matrix.arch}}-${{ github.sha}}-logs
           path: logs/
 
       - name: Remove logs