Rotate NewRelic license key and document steps in the wiki

[FuhuXia]

To maintain security, we should rotate NewRelic API keys every a few months. We also received emails from newrelic.com requesting key rotation.

• Rotate NewRelic API keys by March 1, 2025
• Document steps in Wiki
• Set schedule to repeat every 90 days.

Last time it was rotated in 2024-01-08 by ticket #4580

[Jin-Sun-tts]

The old key named "cloud.gov app log" will be deleted, and a new key will be created and reset across all spaces.

For key rotation, refer to New Relic API Key Rotation.

There are two app environment variables related to this key:

NEW_RELIC_LICENSE_KEY is set in inventory-secrets and catalog-secrets for production, staging, and development spaces.
NEWRELIC_LICENSE_KEY is set in logstack-shipper environment variables in the three management spaces.

[Jin-Sun-tts]

In the development enviornment, NEW_RELIC_LICENSE_KEY also in the user-provided configurations for datagov-harvest-secrets and catalog-next-secrets

Use cf uups to update secrets in regular spaces and cf set-env to update them in management spaces

Restart each app in the development environment after an update. GitHub triggers regular restarts in staging and production.

[Jin-Sun-tts]

Updated the New Relic license key across all environments.

Documented the process in the wiki: How to Rotate New Relic License Key

Created a ticket for the next key rotation: #5082