changelog update

[alyssa-embrace]

Description of changes

Changelog updates for 6.5.0 and 6.6.0

Checklist before you pull:

• Double-check that any changes fit the Embrace Docs Style Guide.
• Please ensure that there is no customer-identifying information in text or images.
• If you changed any doc file names, add a redirect from old to new URL so that we don't end up with broken links. You can do this by adding a set of to/from values in docusaurus.config.js under @docusaurus/plugin-client-redirects.
• If you link to a header within a page in the docs, make sure that header has an explicit tag in case it changes in the future. E.g., the H3 header ### Hello World {#my-explicit-id} has an explicit tag my-explicit-id.

[github-actions]

Summary - Markdown Lint

Success: No issues found in 393 files (113ms)

[github-actions]

Summary - Link Checker

Status	Count
🔍 Total	478
✅ Successful	382
⏳ Timeouts	0
🔀 Redirected	1
👻 Excluded	95
❓ Unknown	0
🚫 Errors	0
⛔ Unsupported	0

Redirects per input

Redirects in docs/data-destinations/honeycomb.md

• [200] https://docs.honeycomb.io/working-with-your-data/settings/api-keys/ | Redirect: Followed 2 redirects resolving to the final status of: OK. Redirects: https://docs.honeycomb.io/working-with-your-data/settings/api-keys/ --> https://docs.honeycomb.io/working-with-your-data/settings/api-keys --> https://docs.honeycomb.io/configure/environments/manage-api-keys
  Full Github Actions output

[facostaembrace]

what does it mean?