use 7z rather than zip

Author: sunshowers

.github/workflows/release-test.yml

@@ -101,7 +101,8 @@ jobs:
         run: |
           cd target/signed
           tar -czf ${{ github.ref_name }}-${{ matrix.target }}.tar.gz internal-test.exe
-          zip -r ${{ github.ref_name }}-${{ matrix.target }}.zip internal-test.exe
+          # Windows has 7z, not zip.
+          7z a ${{ github.ref_name }}-${{ matrix.target }}.zip internal-test.exe
           gh release upload ${{ github.ref }} \
             ${{ github.ref_name }}-${{ matrix.target }}.tar.gz \
             ${{ github.ref_name }}-${{ matrix.target }}.zip