Bump PA commons to version 1.4.0 for 2.15.0 and PA-RTF changes

[peterzhuamazon]

Is your feature request related to a problem? Please provide an existing Issue # , or describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Describe the solution you are proposing A clear and concise description of what you want to happen.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context https://github.com/opensearch-project/performance-analyzer/issues/663#issuecomment-2161311887

Check List

• [ ] New functionality includes testing.
  • [ ] All tests pass
• [ ] New functionality has been documented.
  • [ ] New functionality has javadoc added
• [x] Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license. For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[peterzhuamazon]

@varunsrivathsav @Gaganjuneja Thanks!

This is required if we want to release PA-RTF feature in 2.15.0. Since the PR is already backported to 2.x.

Thanks.