update workflow

.github/workflows/build-dep-g2o.yml

@@ -12,16 +12,26 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
+    - uses: ilammy/msvc-dev-cmd@v1
 
-    - name: Install QT
-      run: choco install qt-sdk-windows-x64-msvc2012
+    - name: Download QT
+      run: curl.exe https://download.qt.io/official_releases/qt/5.15/5.15.11/single/qt-everywhere-opensource-src-5.15.11.tar.xz -o qt.tar.xz
+
+    - name: unpack QT
+      run: tar xJf qt.tar.xz
+
+    - name: unpack QT
+      working-directory: qt-everywhere-src-5.15.11
+      run: ./configure -debug -nomake examples -nomake tests -skip qtwebengine -opensource
+
+    - name: build QT
+      working-directory: qt-everywhere-src-5.15.11
+      run: nmake
 
     - name: Run build script
       working-directory: ${{ github.workspace }}/externals/prebuild_scripts/
       run: ./build_g2o_x64.bat
 
-
-
     - name: Archive prebuilt g2o
       uses: actions/upload-artifact@v3
       with: