docs: Add CMIP26 Kyoto conference to key updates in README

Author: Climateyousheng

README.md

@@ -12,6 +12,7 @@ Documentation for the Bristol version of the UK Met Office Unified Model.
 
 - **Rocky 8 migration** — BRIDGE servers have moved from CentOS6 to Rocky 8.10. If you haven't migrated yet, see the [Rocky 8 guide](Rocky8.md).
 - **BC5 workflow** — BC5 is replacing BC4/BP as the university HPC. See [BC5 Workflow](BC5_Workflow.md) and [University HPC](University_HPC.md) for current status and data-flow changes.
+- **CMIP26 conference (Kyoto, Japan)** — The CMIP26 conference is being held in Kyoto, Japan. See the [CMIP7 outcomes page](CMIP7_outcomes.md) for papers, talks, and posters from the Bristol group.
 
 ## Recent Updates