CI: Chnage test versions combination (#213)

* CI: Change test versions combination

- test with python 3.9 on Github actions
- test with python 3.8 on Azure pipelines
- test against 5.9.9, 5.12.8, 5.13.2, 5.14.2, 5.15.2, and 6.1.0
- run on ubuntu-20.04 for Qt6
- CI: Test mac/ios/Qt6 combination
- CI: Azure: install desktop qtbase when android and ios install
- CI: update example project for Qt6

Signed-off-by: Hiroshi Miura <miurahr@linux.com>

azure-pipelines.yml

@@ -19,7 +19,7 @@ jobs:
 - job: MatricesGenerator
   displayName: Matrices Generator
   pool:
-    vmImage: 'ubuntu-18.04'
+    vmImage: 'ubuntu-20.04'
   steps:
     - task: UsePythonVersion@0
       inputs:
@@ -52,7 +52,7 @@ jobs:
 - job: Linux
   dependsOn: MatricesGenerator
   pool:
-    vmImage: 'ubuntu-18.04'
+    vmImage: 'ubuntu-20.04'
   strategy:
     matrix: $[ dependencies.MatricesGenerator.outputs['mtrx.linux'] ]
   steps:
@@ -92,7 +92,7 @@ jobs:
   displayName: Linux (source)
   variables:
     PYTHON_VERSION: '3.8'
-    QT_VERSION: 6.0.0
+    QT_VERSION: 6.1.0
     HOST: linux
     TARGET: desktop
     TOOL_NAME: src