#1178 build.yml: added qtwebsockets module to Qt6 installation

Author: Aleksandr-Starun

.github/workflows/build.yml

@@ -95,7 +95,7 @@ jobs:
         uses: jurplel/install-qt-action@v4
         with:
           version: ${{ env.QT_VERSION }}
-          modules: "qthttpserver qt5compat qtwebchannel qtpositioning qtshadertools qtwebengine"
+          modules: "qthttpserver qt5compat qtwebchannel qtpositioning qtshadertools qtwebengine qtwebsockets"
           cache: true
           cache-key-prefix: "qt-${{ matrix.os }}"