Add end of support notice for byoe (#2805)

* docs: add end of support notice for BYOE deployments

* docs: formatting changes

Author: pdudhaiya-crest

docs/gettingstarted/byoe-rhel8.md

@@ -1,5 +1,11 @@
 # Configure SC4S in a non-containerized SC4S deployment
 
+!!! warning ""
+    Support for all non-containerized deployments using the "bring your own environment" method, as detailed in this documentation, will end in **April 2026**.
+    After that, **no further updates, security patches, or technical support will be provided for this deployment method**. Continued use may expose your environment to security risks and compatibility issues.
+    
+    We recommend planning your migration to one of the other supported platform or deployment method before April 2026 to ensure continued support and security. See [Select a Container Runtime and SC4S Configuration](https://splunk.github.io/splunk-connect-for-syslog/main/gettingstarted/getting-started-runtime-configuration/#step-3-select-a-container-runtime-and-sc4s-configuration) for more details.
+
 Configuring SC4S in a non-containerized SC4S deployment requires a custom configuration. Note that since Splunk does not control your unique environment, we cannot help with setting up environments, debugging networking, etc. Consider this configuration only if:
 
 * Your specific requirements preclude the use of containers or demand that you use SC4S in a custom environment.

docs/gettingstarted/getting-started-runtime-configuration.md

@@ -69,7 +69,7 @@ Check your Podman or Docker documentation to see which operating systems are sup
 | [Docker CE + systemd](docker-systemd-general.md)                  |                                                                                     |
 | [Docker Desktop + Compose](docker-compose-MacOS.md)               | MacOS                                                                               |
 | [Docker Compose](docker-compose.md)                               |                                                                                     |
-| [Bring your own Environment](byoe-rhel8.md)                       | RHEL or CentOS 8.1 & 8.2 (best option)                                              |
+| (Deprecated) [Bring your own Environment](byoe-rhel8.md)          | RHEL or CentOS 8.1 & 8.2 (best option)                                              |
 | [Offline Container Installation](docker-podman-offline.md)        |                                                                                     |
 | [Ansible+Docker Swarm](ansible-docker-swarm.md)                   |                                                                                     |
 | [Ansible+Podman](ansible-docker-swarm.md)                         |                                                                                     |

mkdocs.yml

@@ -24,6 +24,7 @@ markdown_extensions:
           format: !!python/name:pymdownx.superfences.fence_code_format
   - pymdownx.blocks.tab:
       alternate_style: true
+  - admonition
 
 
 theme: