ci: update ubuntu-20.04 to ubuntu-24.04

Author: mostroverkhov

.github/workflows/ci-build.yml

@@ -15,7 +15,7 @@ jobs:
 
     strategy:
       matrix:
-        os: [ ubuntu-20.04, macos-13, windows-2019 ]
+        os: [ ubuntu-24.04, macos-13, windows-2019 ]
         jdk: [ 8, 11, 17, 21 ]
       fail-fast: false