Remove ganttcharts in 3.0.0 and update deprecation notice (#5358)

Signed-off-by: Peter Zhu <zhujiaxi@amazon.com>

Author: peterzhuamazon

manifests/3.0.0-alpha1/opensearch-dashboards-3.0.0-alpha1-test.yml

@@ -29,11 +29,6 @@ components:
       test-configs:
         - with-security
         - without-security
-  - name: ganttChartDashboards
-    integ-test:
-      test-configs:
-        - with-security
-        - without-security
   - name: indexManagementDashboards
     integ-test:
       test-configs:

manifests/3.0.0-alpha1/opensearch-dashboards-3.0.0-alpha1.yml

@@ -20,9 +20,6 @@ components:
   - name: reportsDashboards
     repository: https://github.com/opensearch-project/dashboards-reporting.git
     ref: main
-  - name: ganttChartDashboards
-    repository: https://github.com/opensearch-project/dashboards-visualizations.git
-    ref: main
   - name: queryWorkbenchDashboards
     repository: https://github.com/opensearch-project/dashboards-query-workbench.git
     ref: main

manifests/3.0.0-beta1/opensearch-dashboards-3.0.0-beta1-test.yml

@@ -29,11 +29,6 @@ components:
       test-configs:
         - with-security
         - without-security
-  - name: ganttChartDashboards
-    integ-test:
-      test-configs:
-        - with-security
-        - without-security
   - name: indexManagementDashboards
     integ-test:
       test-configs:

manifests/3.0.0-beta1/opensearch-dashboards-3.0.0-beta1.yml

@@ -20,9 +20,6 @@ components:
   - name: reportsDashboards
     repository: https://github.com/opensearch-project/dashboards-reporting.git
     ref: main
-  - name: ganttChartDashboards
-    repository: https://github.com/opensearch-project/dashboards-visualizations.git
-    ref: main
   - name: queryWorkbenchDashboards
     repository: https://github.com/opensearch-project/dashboards-query-workbench.git
     ref: main

release-notes/opensearch-release-notes-2.19.0.md

@@ -81,7 +81,10 @@ OpenSearch 2.19 includes the following experimental functionality. Experimental
 #### DEPRECATION NOTICES
 
 **Deprecating support for Ubuntu Linux 20.04**
-Please note that OpenSearch will deprecate support for Ubuntu Linux 20.04 as a continuous integration build image and supported operating system in an upcoming version, as Ubuntu Linux 20.04 will reach end-of-life with standard support as of April 2025 (refer to [this notice](https://ubuntu.com/blog/ubuntu-20-04-lts-end-of-life-standard-support-is-coming-to-an-end-heres-how-to-prepare) from Canonical Ubuntu). For a list of OpenSearch's compatible operating systems, [visit here](https://opensearch.org/docs/latest/install-and-configure/os-comp/).
+Please note that OpenSearch and OpenSearch Dashboards will deprecate support for Ubuntu Linux 20.04 as a continuous integration build image and supported operating system in an upcoming version, as Ubuntu Linux 20.04 will reach end-of-life with standard support as of April 2025 (refer to [this notice](https://ubuntu.com/blog/ubuntu-20-04-lts-end-of-life-standard-support-is-coming-to-an-end-heres-how-to-prepare) from Canonical Ubuntu). For a list of the compatible operating systems, [visit here](https://opensearch.org/docs/latest/install-and-configure/os-comp/).
+
+**Deprecating support for Amazon Linux 2 on OpenSearch Dashboards**
+Please note that OpenSearch Dashboards will deprecate support for Amazon Linux 2 as a continuous integration build image and supported operating system in an upcoming version, as Node.js 18 will reach end-of-life with support as of April 2025 (refer to [this notice](https://nodejs.org/en/blog/announcements/v18-release-announce) from nodejs.org) and newer version of Node.js LTS version (20+) will not support runtime on Amazon Linux 2. For a list of the compatible operating systems, [visit here](https://opensearch.org/docs/latest/install-and-configure/os-comp/).
 
 **Deprecating support for features and plugins in OpenSearch 3.0.0**
 Please note that OpenSearch and OpenSearch Dashboards will deprecate support for the following features and plugins in [OpenSearch 3.0.0](https://github.com/opensearch-project/opensearch-build/issues/3747):
@@ -93,6 +96,9 @@ Please note that OpenSearch and OpenSearch Dashboards will deprecate support for
 * [k-NN](https://github.com/opensearch-project/k-NN/issues/2396): OpenSearch 3.0.0 will deprecate the NMSLIB engine. Users will be advised to use the Faiss or Lucene engines instead.
 
 
+For more updates on breaking changes and deprecated/removed features in version 3.0.0, please see details in the [meta issues](https://github.com/opensearch-project/opensearch-build/issues/5243).
+
+
 ## Release Details
 [OpenSearch and OpenSearch Dashboards 2.19.0](https://opensearch.org/versions/opensearch-2-19-0.html) includes the following features, enhancements, bug fixes, infrastructure, documentation, maintenance and refactoring updates.
 
@@ -1162,4 +1168,4 @@ OpenSearch Dashboards [Release Notes](https://github.com/opensearch-project/Open
 
 * Show selected rules on edit; options should only include enabled rules on edit ([#1231](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/1231))
 * Remove threat intel checkbox detector creation ([#1232](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/1232))
-* Updating Preview Message functionality while setting notifications in detector alerts ([#1241](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/1241))
+* Updating Preview Message functionality while setting notifications in detector alerts ([#1241](https://github.com/opensearch-project/security-analytics-dashboards-plugin/pull/1241))