Pull Request validation tests

Add dependency to pin rexml at <= 3.3.1 as latest versions throw execption when parsing invalid xml. Without the ping latest gem gets pulled in.

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:pipeline:expeditor buildkite trigger-pipeline .expeditor/verify.pipeline.yml
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run-lint-and-specs-ruby-3.0.expeditor/run_linux_tests.sh rake
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run-lint-and-specs-windowsgem install chef-utils && bundle install --jobs=7 --retry=3 && bundle exec rake
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Total Job Run Time: 3m 29s