chore: enhance GitHub Actions comments for component index updates (#10291)

* chore: update pre-commit configuration to refine exclude patterns

Modified the exclude pattern for the detect-secrets hook to prevent false positives by excluding the specific component_index.json file in addition to the docs directory. This change enhances the accuracy of secret detection during pre-commit checks.

* chore: update ruff exclude patterns to include component_index.json

Added the component_index.json file to the exclude patterns in the ruff configuration to prevent false positives during linting. This change enhances the accuracy of code quality checks.

* chore: enhance GitHub Actions comments for component index updates

Updated the GitHub Actions workflow to improve the commenting mechanism for component index updates. Added logic to delete previous comments from the GitHub Actions bot to prevent duplicates and included a marker in the comment body for better tracking. This change ensures that users receive clear instructions on updating the component index when necessary.

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Co-authored-by: Edwin Jose <edwin.jose@datastax.com>