message: ci: use embedded Java for Bazel coverage
diff: @@ -94,6 +94,7 @@ case "$MODE" in
  bazel coverage \
  --combined_report=lcov \
  --coverage_report_generator=@bazel_tools//tools/test/CoverageOutputGenerator/java/com/google/devtools/coverageoutputgenerator:Main \
  + --java_runtime_version=remotejdk_11 \
  ${CHOSEN_TARGETS}
  # output will be in bazel-out/_coverage/_coverage_report.dat
  ;;
  