Set Quality master pipeline KPI date range to 2 years

Why is this change being made?

The embedded chart for https://about.gitlab.com/handbook/engineering/quality/performance-indicators/#gitlab-project-master-pipeline-success-rate currently goes back to 2016-05-01. This change will show the last 2 years (730 days) based on the Sisense embed API.

Review App link: https://update-quality-pipeline-success-rate-timeframe.about.gitlab-review.app/handbook/engineering/quality/performance-indicators/index.html#gitlab-project-master-pipeline-success-rate

Author Checklist

• Provided a concise title for the MR
• Added a description to this MR explaining the reasons for the proposed change, per say-why-not-just-what
• Assign this change to the correct DRI
  • If the DRI for the page/s being updated isn’t immediately clear, then assign it to your manager.
  • If your manager does not have merge rights, please ask someone to merge it AFTER it has been approved by your manager in #mr-buddies.
  • If the changes relate to any part of the project other than updates to content and/or data files please make sure to ping @gl-static-site-editor in a comment for a review and merge. For example changes to .gitlab-ci.yml, JavaScript/CSS/Ruby code or the layout files.

For help with failing pipelines reach out in #mr-buddies in Slack