do not install Python via jurplel/install-qt-action in CI (danmar#7466)

this causes the existing Python installation to be overridden

Author: firewave

.github/workflows/CI-windows.yml

@@ -47,6 +47,7 @@ jobs:
         with:
           version: ${{ matrix.qt_ver }}
           modules: 'qtcharts'
+          setup-python: 'false'
           cache: true
 
       - name: Run CMake for GUI release (Qt 5)

.github/workflows/asan.yml

@@ -60,6 +60,7 @@ jobs:
         with:
           version: ${{ env.QT_VERSION }}
           modules: 'qtcharts'
+          setup-python: 'false'
           cache: true
 
       - name: Install missing Python packages

.github/workflows/clang-tidy.yml

@@ -51,6 +51,7 @@ jobs:
         with:
           version: ${{ env.QT_VERSION }}
           modules: 'qtcharts'
+          setup-python: 'false'
           install-deps: false
           cache: true
 

.github/workflows/iwyu.yml

@@ -104,6 +104,7 @@ jobs:
         with:
           version: ${{ env.QT_VERSION }}
           modules: 'qtcharts'
+          setup-python: 'false'
           install-deps: false
           cache: true
 
@@ -195,6 +196,7 @@ jobs:
         with:
           version: ${{ env.QT_VERSION }}
           modules: 'qtcharts'
+          setup-python: 'false'
           install-deps: false
           cache: true
 

.github/workflows/release-windows.yml

@@ -59,6 +59,7 @@ jobs:
         with:
           version: ${{ env.QT_VERSION }}
           modules: 'qtcharts'
+          setup-python: 'false'
           tools: 'tools_opensslv3_x64'
 
       # TODO: build with multiple threads

.github/workflows/selfcheck.yml

@@ -46,6 +46,7 @@ jobs:
         with:
           version: ${{ env.QT_VERSION }}
           modules: 'qtcharts'
+          setup-python: 'false'
           install-deps: false
           cache: true
 

.github/workflows/tsan.yml

@@ -60,6 +60,7 @@ jobs:
         with:
           version: ${{ env.QT_VERSION }}
           modules: 'qtcharts'
+          setup-python: 'false'
           cache: true
 
       - name: Install missing Python packages

.github/workflows/ubsan.yml

@@ -60,6 +60,7 @@ jobs:
         with:
           version: ${{ env.QT_VERSION }}
           modules: 'qtcharts'
+          setup-python: 'false'
           cache: true
 
       - name: Install missing Python packages