Update runners & qt versions

Author: jurplel

.github/workflows/build.yml

@@ -19,26 +19,26 @@ jobs:
     strategy:
       matrix:
         include:
-          - runner: 'ubuntu-20.04'
+          - runner: 'ubuntu-22.04'
             qtVersion: '5.15.2'
-          - runner: 'ubuntu-20.04'
+          - runner: 'ubuntu-22.04'
             qtVersion: '5.9'
             osSuffix: '_qt5.9'
             skipPlugins: 'true'
           - runner: 'macos-14'
-            qtVersion: '6.8.2'
+            qtVersion: '6.8.3'
             qtModules: 'qtimageformats'
             buildArch: 'Universal'
           - runner: 'macos-13'
             qtVersion: '5.15.2'
             osSuffix: '_legacy'
           - runner: 'windows-2022'
-            qtVersion: '6.8.2'
+            qtVersion: '6.8.3'
             qtArch: 'win64_msvc2022_64'
             osSuffix: '_64'
             qtModules: 'qtimageformats'
           - runner: 'windows-2022'
-            qtVersion: '6.8.2'
+            qtVersion: '6.8.3'
             qtArch: 'win64_msvc2022_arm64_cross_compiled'
             osSuffix: '_arm64'
             qtModules: 'qtimageformats'