ci(setup-deps): always use sccache, simplify restore key

sccache is available on arm runners. we can use the restore key for an
easy, unique restore key in the cache too (it also prevents us from
re-using the ccache caches!)

Signed-off-by: Seth Flynn <getchoo@tuta.io>

.github/workflows/build.yml

@@ -126,6 +126,7 @@ jobs:
         uses: ./.github/actions/setup-dependencies
         with:
           build-type: ${{ inputs.build-type || 'Debug' }}
+          artifact-name: ${{ matrix.artifact-name }}
           msystem: ${{ matrix.msystem }}
           vcvars-arch: ${{ matrix.vcvars-arch }}
           qt-architecture: ${{ matrix.qt-architecture }}