CI: only upload artifacts with keyring enabled

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        features: ["", "--features keyring-auth"]
+        features: ["", "--all-features"]
 
     steps:
     - uses: actions/checkout@v2
@@ -50,6 +50,7 @@ jobs:
       run: cargo test --release ${{ matrix.features }} --verbose
     - name: Archive artifacts
       uses: actions/upload-artifact@v2
+      if: matrix.features == '--all-features'
       with:
         name: Binaries
         path: |