Release note for job notification updates (#4405)

## What are you changing in this pull request and why?

Release note for job notification updates 

## Checklist
- [x] Review the [Content style
guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md)
and [About
versioning](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#adding-a-new-version)
so my content adheres to these guidelines.
- [ ] Needs product team review

Adding new pages (delete if not applicable):
- ~~[ ] Add page to `website/sidebars.js`~~ this is automated for
release notes
- [x] Provide a unique filename for the new page

website/docs/docs/dbt-versions/release-notes/02-Nov-2023/job-notifications-rn.md

@@ -0,0 +1,17 @@
+---
+title: "Enhancement: Email and Slack job notifications"
+description: "November 2023: New quality-of-life improvements for setting up and administering email and Slack job notifications"
+sidebar_label: "Enhancement: Job notifications"
+sidebar_position: 10
+tags: [Nov-2023]
+---
+
+There are new quality-of-life improvements in dbt Cloud for email and Slack notifications about your jobs: 
+
+- You can add external email addresses and send job notifications to them. External emails can be:
+    - Addresses that are outside of your dbt Cloud account
+    - Third-party integration addresses for configuring notifications to services like Microsoft Teams or PagerDuty 
+- You can configure notifications for multiple Slack channels. Previously, you could only configure one Slack channel. 
+- Any account admin can now edit slack notifications, not just the person who created them. 
+
+To learn more, check out [Job notifications](/docs/deploy/job-notifications).