Fixed build matrix for agents

Author: AmonRaNet

.github/workflows/build.yaml

@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ubuntu_version: [20.04, 22.04]
+        ubuntu_version: [latest]
         qt_version: [5.12.12, 5.15.2, 6.4.0]
         build: [cmake+qmake]
 
@@ -60,7 +60,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        win_version: [2019, 2022]
+        win_version: [latest]
         qt_version: [5.12.12, 5.15.2, 6.4.0]
         build: [cmake+qmake]
 
@@ -99,7 +99,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        macos_version: [11, 12]
+        macos_version: [latest]
         qt_version: [5.15.2, 6.4.0]
         build: [cmake+qmake]