Removed the direct inclusion of Pry and make it conditional based on the ENABLE_PRY environment variable

[AlajeBash]

Before contributing, please read our contributing guidelines and code of conduct.

Overview

I update all the configuration files by removing Pry from the default setup and add a conditional configuration.

Here is how a Developers can enable or disable "Pry" in the process of Debugging:

Debugging with Pry

To Enable Pry for debugging, follow these steps:

1. Open a terminal in your project directory.
2. Set the ENABLE_PRY environment variable by running the following command:

   export ENABLE_PRY=1

This command enables Pry for the current session.

Debugging without Pry

To Disable Pry for debugging, follow these steps:
Set the ENABLE_PRY environment variable by running the following command:

 unset ENABLE_PRY

Note: Pry is included only when the ENABLE_PRY environment variable is set. When it's not set, Pry will not be part of your project's default setup

Submitter Checklist:

• Include a link to the related GitHub issue, [ Link to the problem Remove 'pry' as a dev dependency #2262
• Include a security review link, if applicable

Testing

The agent includes a suite of unit and functional tests which should be used to
verify your changes don't break existing functionality. These tests will run with
GitHub Actions when a pull request is made. More details on running the tests locally can be found
here for our unit tests,
and here for our functional tests.
For most contributions it is strongly recommended to add additional tests which
exercise your changes.

Reviewer Checklist

• Perform code review
• Add performance label
• Perform appropriate level of performance testing
• Confirm all checks passed
• Add version label prior to acceptance

[CLAassistant]

All committers have signed the CLA.

[kaylareopelle]

Hi @AlajeBash! Thanks for your submission!

Remember to sign the CLA so we'll be able to accept it! 😄

It looks like our Rubocop linter found a few issues:

Offenses:

test/environments/norails/Gemfile:20:3: 
  C: [Correctable] Layout/BlockAlignment: 
    end at 20, 2 is not aligned with group :development do at 15, 0.
  end
  ^^^
test/multiverse/suites/active_record_pg/active_record_test.rb:5[9](https://github.com/newrelic/newrelic-ruby-agent/actions/runs/6541169160/job/17792085637?pr=2265#step:6:10)7:7: 

  W: Lint/Debugger: Remove debugger entry point binding.pry.
      binding.pry
      ^^^^^^^^^^^

Once those are fixed, we'll be able to proceed with the review.

[AlajeBash]

@kaylareopelle thank you for your and feedback, i will fix the offenses and sign the CLA.

[AlajeBash]

@kaylareopelle i'm waiting for your review. Thanks