add retry logic to the action

[waheedahmed]

This pull request adds configurable retry logic for enqueuing pull requests, allowing users to specify how many times to retry and how long to wait between retries if the initial enqueue attempt fails. It also updates documentation and input defaults to reflect these new options.

Enqueue Retry Logic Enhancements:

• Added enqueue-retries and enqueue-retry-sleep inputs to allow configuration of retry attempts and sleep duration between retries when enqueuing a PR fails. Defaults are 6 retries and 5000ms sleep. Setting either to 0 disables the respective behavior. (action.yml, src/api.js, README.md) [1] [2] [3] [4] [5] [6]
• Implemented the retry and sleep logic in the enqueue process, with clear logging and failure handling. (src/api.js) [1] [2]

Documentation and Input Updates:

• Updated README.md and input tables to document the new retry options, including usage examples. [1] [2]
• Updated test configuration to include new inputs with default values. (src/__tests__/index.test.js)
• Clarified example skip label in action.yml.

Other Updates:

• Bumped Node.js version from 20 to 22 in action.yml and updated package version to 0.0.5. (action.yml, package.json) [1] [2]