Update release workflows post-migration (#2120)

* Fix to trigger extracted release workflows

* Fix input descriptions

* Add tool installation steps

* Fix indentation

* Fix token passing

* Fix release tag name reference

* Fix release tag name reference

* Fix release tag name

* Update publish-canary workflow

* Update workflows

* Fix target org

* Add push to registries flag

* Update publish-chart

* Add job summary to publish-arc

* Enhance summary message

* Add publish canary workflow

* Remove backticks

* Fix variable

* Fix index.yaml location and add job summary

* Fix publish chart workflow

* Enhance job summary for publish-chart

* Enhance chart version identification and fix chart upload

* Fix cr index

* Fix cr index and add comments

* Fix comment

* Pin marketplace actions

* Remove 3rd party action

* Add comments, parametrise where needed

* Add release process brief

* Change target repo

* Removing failsafe

* Removing failsafe

* Replace DOCKER_USER with DOCKERHUB_USERNAME

CONTRIBUTING.md

@@ -210,4 +210,10 @@ The process would look like the below:
 - Run `NAME=$DOCKER_USER/actions-runner-controller VERSION=canary make docker-build docker-push` for a custom container image build
 - Update your actions-runner-controller's controller-manager deployment to use the new image, `$DOCKER_USER/actions-runner-controller:canary`
 
-Please also note that you need to replace `$DOCKER_USER` with your own DockerHub account name.
+Please also note that you need to replace `$DOCKER_USER` with your own DockerHub account name.
+
+## Release process
+
+Only the maintainers can release a new version of actions-runner-controller, publish a new version of the helm charts, and runner images.
+
+All release workflows have been moved to [actions-runner-controller/releases](https://github.com/actions-runner-controller/releases) since the packages are owned by the former organization.