Changed some of the runners used in the GitHub Actions CI workflow.

Author: mdadams

.github/workflows/ci.yml

@@ -13,18 +13,18 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ubuntu-22.04, ubuntu-20.04, macos-15, macos-13]
+        os: [ubuntu-24.04, ubuntu-24.04-arm, macos-15]
         compiler: [ {cc: gcc, cxx: g++}, {cc: clang, cxx: clang++} ]
         include:
-          - os: [windows-2022]
+          - os: [windows-2025]
         exclude:
           # Temporarily disable Ubuntu 20.04 with GCC since linking with
           # TSan fails due the linker being unable to find libtsan_preinit.o.
           # This used to work previously.
           # Perhaps, the cause is related to the following Ubuntu issue:
           # https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/2029910
-          - os: ubuntu-20.04
-            compiler: {cc: gcc, cxx: g++}
+          #- os: ubuntu-20.04
+          #  compiler: {cc: gcc, cxx: g++}
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps: