fix: bump @elastic/schemas to 0.7.1

[JoshMock]

Upgrade of @elastic/schemas provides fixes and improved support for several APIs that were absent or incorrect, including:

• Kibana alerting-v2 APIs
• Kibana cases APIs
• Cloud role-mapping APIs

See elastic/schemas-js#79 for the full list.

Fixes #528.

[github-actions]

docs/cli/schema.json is out of date. Comment /fix-schema on this PR and the bot will regenerate and commit it automatically.

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	0.7s
✅ REPOSITORY	gitleaks	yes		no	no	56.37s
✅ REPOSITORY	git_diff	yes		no	no	0.06s
✅ REPOSITORY	secretlint	yes		no	no	2.27s
✅ REPOSITORY	trivy	yes		no	no	23.34s
✅ TYPESCRIPT	eslint	1		0	0	2.85s

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[JoshMock]

/fix-schema

[github-actions]

Schema regenerated and committed.

[github-actions]

PR type mismatch: title uses fix: bump @elastic/schemas to 0.7.1, diff looks like feat! instead.

The schemas bump regenerates the CLI with new user-facing commands and flags while also dropping the existing capabilities flag, which is a breaking public API change rather than a bugfix.

This affects the version bump and changelog entry release-please generates on merge. Update the PR title (and squash commit message) to match, or push a follow-up commit that justifies the current prefix.

[github-actions]

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