update build

Author: vdelachaux

.github/workflows/build.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ macos-latest, windows-latest, ubuntu-latest ]
+        os: [ macos-latest, windows-latest ]
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout