push fix for upload

Author: Anmol1696

.github/workflows/docker-launchql.yaml

@@ -24,8 +24,10 @@ jobs:
       matrix:
         include:
           - platform: linux/amd64
+            arch: amd64
             runner: ubuntu-latest      # x86_64
           - platform: linux/arm64
+            arch: arm64
             runner: ubuntu-24.04-arm   # native arm
     runs-on: ${{ matrix.runner }}
 
@@ -107,7 +109,8 @@ jobs:
         if: github.event_name != 'pull_request'
         uses: actions/upload-artifact@v4
         with:
-          name: digests-${{ matrix.platform }}
+          # Artifact names cannot contain slashes, so we use matrix.arch
+          name: digests-${{ matrix.arch }}
           path: ${{ runner.temp }}/digests/*
 
   # Assemble per-architecture images into a single