Update IKVM.Maven.yml

Author: wasabii

.github/workflows/IKVM.Maven.yml

@@ -162,7 +162,7 @@ jobs:
     timeout-minutes: 240
     needs:
     - build
-    runs-on: ${{ fromJSON('{"win-x64":["windows-2022"],"linux-x64":["ubuntu-22.04"],"osx-x64":["macos-12"],"osx-arm64":["macos-14"]}')[matrix.sys] }}
+    runs-on: ${{ fromJSON('{"win-x64":["windows-2022"],"linux-x64":["ubuntu-22.04"],"osx-x64":["macos-13"],"osx-arm64":["macos-14"]}')[matrix.sys] }}
     steps:
     - name: Free Disk Space (Linux)
       if: runner.os == 'Linux'