fix(spec): add missing bearerAuth scheme and transaction parameters

Fix OpenAPI validation errors discovered by Redocly linter:

1. Add bearerAuth security scheme definition
   - Was present in source v20111101.yaml but not synced during phases
   - Required by 4 processor token endpoints

2. Add missing parameters to DELETE /users/{user_guid}/transactions/{transaction_guid}
   - Added transactionGuid and userGuid parameter refs
   - Pre-existing issue from source file

These fixes resolve all 6 critical errors. Spec now validates successfully
with 'npx @redocly/cli lint' (231 warnings remain, non-critical).

Root cause: Phase scripts didn't sync securitySchemes section from source.

Author: Nicki Nixon

openapi/mx_platform_api.yml

@@ -2668,6 +2668,9 @@ paths:
       operationId: deleteManualTransactions
       summary: Delete manual transactions
       description: Delete a manual transaction. In the path, use the manual transaction guid as the `transaction_guid`, such as `MAN-810828b0-5210-4878-9bd3-f4ce514f90c4`.
+      parameters:
+        - $ref: '#/components/parameters/transactionGuid'
+        - $ref: '#/components/parameters/userGuid'
       responses:
         "204":
           description: No content
@@ -8740,3 +8743,6 @@ components:
     basicAuth:
       scheme: basic
       type: http
+    bearerAuth:
+      scheme: bearer
+      type: http