[Backport 8.1.x] release: Hand "Update main" PRs over to the releaseworker

.buildkite/pipeline.yaml

@@ -34,7 +34,7 @@ steps:
       sg release run test --workdir=. --config-from-commit
 
   - label: "(promote) Release: test"
-    if: build.branch =~ /^promote\/release-.*/
+    if: build.branch =~ /^promote\/release-.*/ && build.branch !~ /-update-main$/
     plugins:
       - ssh://git@github.com/sourcegraph/sg-buildkite-plugin.git#main: ~
     command: |
@@ -57,7 +57,7 @@ steps:
       sg release run internal finalize --workdir=. --config-from-commit
 
   - label: "(promote) Release: finalize"
-    if: build.branch =~ /^promote\/release-.*/
+    if: build.branch =~ /^promote\/release-.*/ && build.branch !~ /-update-main$/
     plugins:
       - ssh://git@github.com/sourcegraph/sg-buildkite-plugin.git#main: ~
     command: |

release.yaml

@@ -389,72 +389,3 @@ promoteToPublic:
             echo "Build created, see:"
             echo $body | jq .web_url
           fi
-
-      - name: "update main with latest version"
-        cmd: |
-          set -eu
-          branch="promote/release-{{version}}-update-main"
-          echo "Checking out origin/main"
-          git fetch origin main
-          git switch main
-          echo "Creating branch origin/${branch}"
-          git switch -c "${branch}"
-
-      - name: "sg ops"
-        cmd: |
-          set -eu
-          sg ops update-images \
-            --kind k8s \
-            --registry index.docker.io/sourcegraph \
-            --docker-username=$DOCKER_USERNAME \
-            --docker-password=$DOCKER_PASSWORD \
-            --pin-tag {{inputs.server.tag}} \
-            base/
-
-      - name: "sg ops (executors)"
-        cmd: |
-          set -eu
-          sg ops update-images \
-            --kind k8s \
-            --registry index.docker.io/sourcegraph \
-            --docker-username=$DOCKER_USERNAME \
-            --docker-password=$DOCKER_PASSWORD \
-            --pin-tag {{inputs.server.tag}} \
-            components/executors/
-
-      - name: "sg ops (migrator)"
-        cmd: |
-          set -eu
-          sg ops update-images \
-            --kind k8s \
-            --registry index.docker.io/sourcegraph \
-            --docker-username=$DOCKER_USERNAME \
-            --docker-password=$DOCKER_PASSWORD \
-            --pin-tag {{inputs.server.tag}} \
-            components/utils/migrator/
-
-      - name: "git:commit"
-        cmd: |
-          set -eu
-          branch="promote/release-{{version}}-update-main"
-          find . -name "*.yaml" | xargs git add
-          find . -name "*.yml" | xargs git add
-
-          # Careful with the quoting for the config, using double quotes will lead
-          # to the shell dropping out all quotes from the json, leading to failed
-          # parsing.
-          git commit -am 'update-main: {{version}}' -m 'update main with latest release'
-          git push origin "${branch}"
-
-      - name: "github:pr"
-        cmd: |
-          set -eu
-          # Create PR to merge release updates into main branch
-          gh pr create \
-            --fill \
-            --draft \
-            --base main \
-            --title "Update main: build {{version}}" \
-            --body "Test plan: automated release PR, CI will perform additional checks"
-          echo "🚢 Please check the associated CI build to ensure the process completed".
-