Description

We're updating the kibana MITRE version from v13.1 to v14.1 that is used in both rule creation and the MITRE coverage overview dashboard (and referenced here).

Background & resources

• PRs: [Security Solution] Updates MITRE ATT&CK framework to v14.1 kibana#174120
• Issues/metas:
  • [Security Solution] Update MITRE ATT&CK mappings to v14.1 kibana#171680
  • [Security Solution] Update MITRE ATT&CK mappings to the next version kibana#166152

Issue template info

• Which documentation set does this change impact?: ESS and serverless
• ESS release: 8.14
• Serverless release: TBD we're still figuring out
• Feature differences: Identical in ess/serverless
• API docs impact: None
• Prerequisites, privileges, feature flags: No response

Pull requests

### Tasks
- [x] Update classic docs: https://github.com/elastic/security-docs/pull/4774
- [x] Update serverless docs: https://github.com/elastic/staging-serverless-security-docs/pull/289