add missing mapping get permission (#5412)

Signed-off-by: Kaituo Li <kaituo@amazon.com>
(cherry picked from commit 827fbec)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

config/roles.yml

@@ -529,6 +529,7 @@ forecast_full_access:
         - 'indices:admin/mapping/get'
         - 'indices:admin/mapping/put'
         - 'indices:admin/mappings/fields/get*'
+        - 'indices:admin/mappings/get'
         - 'indices:admin/resolve/index'
         - 'indices:data/read*'
         - 'indices:data/read/field_caps*'

release-notes/opensearch-security.release-notes-3.1.0.0.md

@@ -20,6 +20,7 @@ Compatible with OpenSearch and OpenSearch Dashboards version 3.1.0
 * Adds details for debugging Security not initialized error([#5370](https://github.com/opensearch-project/security/pull/5370))
 * [Resource Sharing] Store resource sharing info in indices that map 1-to-1 with resource index ([#5358](https://github.com/opensearch-project/security/pull/5358))
 * add missing cluster:monitor permission ([#5405](https://github.com/opensearch-project/security/pull/5405))
+* add missing mapping get permission ([#5412](https://github.com/opensearch-project/security/pull/5412))
 
 ### Removed
 * Removed unused support for custom User object serialization ([#5339](https://github.com/opensearch-project/security/pull/5339))