chore(build): pin os versions for tests

.github/workflows/java-ci.yml

@@ -10,14 +10,15 @@ on:
 jobs:
  # build library
  build:
+ name: build (${{matrix.java_version}}, ${{ startsWith(matrix.os, 'windows-') && 'windows-latest' || 'ubuntu-latest' }})
  runs-on: ${{ matrix.os }}
 
  strategy:
  # always run all tests to avoid having different amounts of tests.
  fail-fast: false
  matrix:
  java_version: ['17', '21']
- os: ['ubuntu-latest', 'windows-latest']
+ os: ['ubuntu-22.04', 'windows-2022']
 
  timeout-minutes: 60
  steps:
@@ -48,7 +49,8 @@ jobs:
  - uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
  if: always()
  with:
- name: ${{ matrix.os }}-${{ matrix.java_version }}-test-results
+ # keep latest suffix for subsequent workflows
+ name: ${{ startsWith(matrix.os, 'windows-') && 'windows-latest' || 'ubuntu-latest' }}-${{ matrix.java_version }}-test-results
  path: |
  build/reports/
  */build/test-results/**/*.xml