fix build

.github/workflows/electron.yml

@@ -112,7 +112,7 @@ jobs:
       - name: Download ubuntu
         uses: actions/download-artifact@v1
         with:
-          name: ubuntu-18.04
+          name: ubuntu-20.04
       - name: Download windows
         uses: actions/download-artifact@v1
         with:
@@ -131,7 +131,7 @@ jobs:
           gpg --allow-secret-key-import --import gpg.key
           mkdir release
           cp windows-latest/* release/
-          cp ubuntu-18.04/* release/
+          cp ubuntu-20.04/* release/
           cp macos-latest/* release/
       - name: Sign binaries
         env: