Run Action on Ubunto 24 instead 20

Author: oehhar

.github/workflows/build_xplat.yml

@@ -15,7 +15,7 @@ jobs:
         runs-on: ${{ matrix.os }}
         strategy:
             matrix:
-                os: [macos-13, ubuntu-20.04, windows-2022]
+                os: [macos-13, ubuntu-24.04, windows-2022]
         steps:
             - name: checkout repo
               uses: actions/checkout@v2