Logs SDK - Fix intermittently failing tests

[kaylareopelle]

The following test on the logs SDK job fails intermittently:

1) Error:
OpenTelemetry::SDK::Logs::Export::BatchLogRecordProcessor::faulty exporter#test_0001_reports export failures:
MockExpectationError: No more expects available for :error: ["OpenTelemetry error: Unable to export 4 log records"] {}
    /Users/runner/work/opentelemetry-ruby/opentelemetry-ruby/api/lib/opentelemetry.rb:37:in `block in error_handler'
    /Users/runner/work/opentelemetry-ruby/opentelemetry-ruby/api/lib/opentelemetry.rb:45:in `handle_error'
    lib/opentelemetry/sdk/logs/export/batch_log_record_processor.rb:199:in `report_result'
    lib/opentelemetry/sdk/logs/export/batch_log_record_processor.rb:191:in `rescue in export_batch'
    lib/opentelemetry/sdk/logs/export/batch_log_record_processor.rb:186:in `export_batch'
    lib/opentelemetry/sdk/logs/export/batch_log_record_processor.rb:110:in `force_flush'
    lib/opentelemetry/sdk/logs/export/batch_log_record_processor.rb:150:in `shutdown'
    test/opentelemetry/sdk/logs/export/batch_log_record_processor_test.rb:476:in `block (4 levels) in <top (required)>'
    test/opentelemetry/sdk/logs/export/batch_log_record_processor_test.rb:473:in `block (3 levels) in <top (required)>'

There's also an intermittent JRuby failure:

  1) Error:
OpenTelemetry::SDK::Logs::Export::BatchLogRecordProcessor::#on_emit#test_0003_logs a warning if a log record was emitted after the buffer is full:
MockExpectationError: expected warn("1 log record(s) dropped. Reason: buffer-full") => nil
    org/jruby/RubyHash.java:1615:in `each'
    test/opentelemetry/sdk/logs/export/batch_log_record_processor_test.rb:220:in `block in <main>'
    org/jruby/RubyArray.java:1981:in `each'
    org/jruby/RubyArray.java:2803:in `map'