macos-15 and ubuntu-24

Author: yegor256

.github/workflows/mvn.yml

@@ -39,7 +39,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2022, macos-12]
+        os: [ubuntu-24.04, windows-2022, macos-15]
         java: [11, 21]
     steps:
       - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4