[Security Solution] Auto-bundle Exceptions API OpenAPI specs (#188408)

**Addresses**: #184428

## Summary

This PR adds scripts for automatic bundling of Exceptions API OpenAPI specs as a part of PR pipeline. Corresponding resulting bundles are automatically committed in the Lists common package `kbn-securitysolution-exceptions-common` in the `docs/openapi/ess/` and `docs/openapi/serverless` folders (similar to #186384).

.buildkite/scripts/steps/openapi_bundling/security_solution_openapi_bundling.sh

@@ -10,4 +10,7 @@ echo --- Security Solution OpenAPI Bundling
 check_for_changed_files "yarn openapi:bundle" true
 
 (cd packages/kbn-securitysolution-lists-common && yarn openapi:bundle)
+check_for_changed_files "yarn openapi:bundle" true
+
+(cd packages/kbn-securitysolution-exceptions-common && yarn openapi:bundle)
 check_for_changed_files "yarn openapi:bundle" true

packages/kbn-securitysolution-exceptions-common/api/duplicate_exception_list/duplicate_exception_list.schema.yaml

@@ -5,6 +5,7 @@ info:
 paths:
   /api/exception_lists/_duplicate:
     post:
+      x-labels: [serverless, ess]
       operationId: DuplicateExceptionList
       x-codegen-enabled: true
       summary: Duplicates an exception list

packages/kbn-securitysolution-exceptions-common/api/export_exception_list/export_exception_list.schema.yaml

@@ -5,6 +5,7 @@ info:
 paths:
   /api/exception_lists/_export:
     post:
+      x-labels: [serverless, ess]
       operationId: ExportExceptionList
       x-codegen-enabled: true
       summary: Exports an exception list

packages/kbn-securitysolution-exceptions-common/api/find_exception_list/find_exception_list.schema.yaml

@@ -3,7 +3,7 @@ info:
   title: Find exception lists API endpoint
   version: '2023-10-31'
 paths:
-  /api/exception_lists/items/_find:
+  /api/exception_lists/_find:
     get:
       x-labels: [serverless, ess]
       operationId: FindExceptionLists

packages/kbn-securitysolution-exceptions-common/api/import_exceptions/import_exceptions.schema.yaml

@@ -5,6 +5,7 @@ info:
 paths:
   /api/exception_lists/_import:
     post:
+      x-labels: [serverless, ess]
       operationId: ImportExceptionList
       x-codegen-enabled: true
       summary: Imports an exception list