[Docs Site] Update pinned api-schemas commit

[github-actions]

This PR updates the api-schemas commit reference to the latest version (d51d7022ca04ef08b25c40b13792d43061f196ec).

[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/util/api.ts	@cloudflare/content-engineering, @pedrosousa, @kodster28

[github-actions]

Preview URL: https://55916bbc.preview.developers.cloudflare.com
Preview Branch URL: https://update-api-schemas-d51d7022ca04ef08b25c40b13792d43061f196ec.preview.developers.cloudflare.com

[pedrosousa]

API operations diff:

+ DELETE  /accounts/{account_id}/access/users/{user_id}
+ GET     /accounts/{account_id}/access/users/{user_id}
+ PUT     /accounts/{account_id}/access/users/{user_id}
+ DELETE  /accounts/{account_id}/access/users/{user_id}/mfa_authenticators/{authenticator_id}
+ PUT     /accounts/{account_id}/ai-search/instances/{id}/items
+ POST    /accounts/{account_id}/ai/run/@cf/zai-org/glm-4.7-flash
+ POST    /accounts/{account_id}/stream/live_inputs/{live_input_identifier}/disable
+ POST    /accounts/{account_id}/stream/live_inputs/{live_input_identifier}/enable