ci: run automation under Streamlit Bot instead of departed user

.github/repo_meta.yaml

@@ -1,5 +1,5 @@
 # point_of_contact: the owner of this repository, can be a GitHub user or GitHub team
-point_of_contact: "@sfc-gh-kmcgrady"
+point_of_contact: "@streamlit/eng"
 # production: whether this repository meets the criteria for being "production", see https://snowflakecomputing.atlassian.net/wiki/spaces/CLO/pages/2239988967/Production+Repository+Criteria for criteria
 production: false
 

.github/workflows/update-bokeh.yml

@@ -59,6 +59,11 @@ jobs:
         id: create_pr
         uses: peter-evans/create-pull-request@v6
         with:
+          # Pin the commit identity to the Streamlit Bot account. Without this,
+          # the action defaults the author to github.actor, which for a scheduled
+          # run is the last user to have edited the cron schedule.
+          author: "Streamlit Bot <core+streamlitbot-github@streamlit.io>"
+          committer: "Streamlit Bot <core+streamlitbot-github@streamlit.io>"
           branch: "release/${{ steps.compare_bokeh.outputs.new_version }}"
           base: main
           add-paths: "."