Update to 2.19

Signed-off-by: Craig Perkins <[email protected]>

Author: cwperks

.github/actions/run-cypress-tests/action.yaml

@@ -19,7 +19,7 @@ runs:
       with:
         path: index-management
         repository: opensearch-project/index-management
-        ref: '2.x'
+        ref: '2.19'
     - name: Run opensearch with plugin
       shell: bash
       if: ${{ inputs.with-security == 'false' }}

.github/workflows/cypress-with-security-workflow.yml

@@ -7,7 +7,7 @@ on:
     branches:
       - "*"
 env:
-  OPENSEARCH_DASHBOARDS_VERSION: '2.x'
+  OPENSEARCH_DASHBOARDS_VERSION: '2.19'
 jobs:
   tests:
     name: Run Cypress E2E tests with security