7.3.1 Documentation release

[bmorelli25]

This ticket tracks PRs for the release notes, version bumps, and branch updates that are necessary for the 7.3.1 release. Please link to PRs as they are created.

PRs for docs repo updates

• Updates shared versions & release-state attributes: Bump shared version to 7.3.1 #1084

PRs for product repo version bumps & RNs

• ES doc version bump & release-state: [DOCS] Bump docs version from 7.3.0 to 7.3.1 elasticsearch#45658
• ES RNs: https://www.elastic.co/guide/en/elasticsearch/reference/7.3/release-notes-7.3.1.html
• ES Hadoop version bump: [DOCS] Bump docs version to 7.3.1 elasticsearch-hadoop#1334
• ES Hadoop release notes: [DOCS] Add 7.3.1 release notes elasticsearch-hadoop#1335
  - [ ] ESS:
• ECE: https://github.com/elastic/cloud/pull/38453
  - [ ] APM RNs:
• APM version bump & RNs: [7.3] Bump version and changelog for 7.3.1 apm-server#2566
• Uptime version bump: [Uptime][docs] Bump Uptime guide version to 7.3.1 kibana#43467
• Logstash RNs: Release notes draft for 7.3.1 logstash#11038
• Logstash doc version bump: [Doc]Bump doc versions to 7.3.1 logstash#11061
• Beats RNs: Close changelog for 7.3.1 beats#13277
• Beats doc version bump: Bump docs version for 7.3.1 beats#13262
  - [ ] Kibana RNs:

Removes coming[ ] tags
wherever they appear
- [ ] Kibana RNs:
- [ ] Logstash RNs:

• ES RNs: Have a message out to James about this.
• Installation & Upgrade Guide: None

Verify release notes are live for each product

• https://www.elastic.co/guide/en/elasticsearch/reference/current/es-release-notes.html
• https://www.elastic.co/guide/en/kibana/current/release-notes.html
• https://www.elastic.co/guide/en/logstash/current/releasenotes.html
• https://www.elastic.co/guide/en/beats/libbeat/current/release-notes.html
• https://www.elastic.co/guide/en/apm/server/current/release-notes.html
• https://www.elastic.co/guide/en/elasticsearch/hadoop/current/release-notes.html