[DOCS] Fix OpenAPI error in OpenAI connector secrets (#244679)

Author: lcawl

oas_docs/output/kibana.serverless.yaml

@@ -94071,7 +94071,6 @@ components:
           description: |
             Base64-encoded PEM CA certificate content for PKI authentication (Other provider only). Optional.
           minLength: 1
-      required: []
     opsgenie_secrets:
       title: Connector secrets properties for an Opsgenie connector
       required:

oas_docs/output/kibana.yaml

@@ -105176,7 +105176,6 @@ components:
           description: |
             Base64-encoded PEM CA certificate content for PKI authentication (Other provider only). Optional.
           minLength: 1
-      required: []
     opsgenie_secrets:
       title: Connector secrets properties for an Opsgenie connector
       required:

src/platform/packages/private/kbn-validate-oas/src/oas_error_baseline.json

@@ -1,4 +1,4 @@
 {
-  "./oas_docs/output/kibana.yaml": 1244,
-  "./oas_docs/output/kibana.serverless.yaml": 1137
+  "./oas_docs/output/kibana.yaml": 1243,
+  "./oas_docs/output/kibana.serverless.yaml": 1136
 }

x-pack/platform/plugins/shared/actions/docs/openapi/components/schemas/genai_secrets.yaml

@@ -23,4 +23,3 @@ properties:
     description: |
       Base64-encoded PEM CA certificate content for PKI authentication (Other provider only). Optional.
     minLength: 1
-required: []