Qt 6.7.0

Also fix new stylesheet issue: windows11 style is now default.
This currently breaks custom stylesheets.
Use windowsvista style as default

azure-pipelines.yml

@@ -69,9 +69,9 @@ jobs:
   variables:
     COMPILER: msvc
     QT_VER_MAIN: '6'
-    QT_VER: '6.6.3'
+    QT_VER: '6.7.0'
     QT_VER_MSVC: 'msvc2019'
-    QT_DATE: '202403191840'
+    QT_DATE: '202403252230'
     QTDIR: C:\Qt\$(QT_VER)\$(QT_VER_MSVC)_64
     VULKAN_VER: '1.3.268.0'
     VULKAN_SDK_SHA: '8459ef49bd06b697115ddd3d97c9aec729e849cd775f5be70897718a9b3b9db5'
@@ -132,7 +132,7 @@ jobs:
     UPLOAD_REPO_FULL_NAME: "RPCS3/rpcs3-binaries-mac"
     RELEASE_MESSAGE: "../GitHubReleaseMessage.txt"
     ARTDIR: $(Build.ArtifactStagingDirectory)
-    QT_VER: '6.6.3'
+    QT_VER: '6.7.0'
     QT_VER_MAIN: '6'
     LLVM_COMPILER_VER: '16'