chore: Update role to latest NGINX best practices

[alessfg]

Proposed changes

Update community files and best practices/required workflows (CLA & OSSF scorecard) to the latest versions.

Checklist

Before creating a PR, run through this checklist and mark each as complete:

• I have read the contributing guidelines.
• I have signed the F5 Contributor License Agreement (CLA).
• If applicable, I have added Molecule tests that prove my fix is effective or that my feature works.
• If applicable, I have checked that any relevant Molecule tests pass after adding my changes.
• I have updated any relevant documentation (defaults/main/*.yml, README.md and CHANGELOG.md).

[Copilot]

Pull Request Overview

This PR updates community documentation, security guidelines, and workflow configurations to align with the latest NGINX best practices for the Ansible role.

• Updated support guidelines and reporting channels in SUPPORT.md
• Revised security vulnerability instructions and CLA references in SECURITY.md, CONTRIBUTING.md, and related workflow files
• Added new issue templates and scorecard configuration files to standardize community contributions

Reviewed Changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
SUPPORT.md	Updated support instructions and added GitHub discussions option
SECURITY.md	Revised vulnerability reporting instructions and updated support links
README.md	Updated Molecule CI/CD badge link
CONTRIBUTING.md	Modified contribution guidelines and updated F5 CLA reference links
CHANGELOG.md	Documented the changes under a new DOCUMENTATION section
.github/workflows/ossf_scorecard.yml	Adjusted workflow triggers and updated comment punctuation
.github/workflows/f5_cla.yml	Updated CLA links, messaging, and added branch specification
.github/scorecard.yml	Introduced new scorecard configuration file
.github/ISSUE_TEMPLATE/feature_request.yml	Added new feature request issue form
.github/ISSUE_TEMPLATE/config.yml	Added configuration for issue templates
.github/ISSUE_TEMPLATE/bug_report.yml	Added new bug report issue form