Build: move canary packages to github (#29411)

* ci: wip - add release next npm package step to pr for testing

* ci: remove unpublish logic and use github for package registry

* chore: refresh drone.yml config

* ci: remove redundant variable

* ci: add missing double quote

* chore: move registry arg to npm script

* chore: refresh drone config

* ci: attempt github registry auth

* build: force lerna registry

* build: remote trailing slash

* build: remove obsolete lerna bootstrap, rename next publish files to canary

* chore: remove release_canary_packages step from pr pipeline

* docs(packages): introduce steps for authenticating with github packages

* refactor: move github registry related commands to shell script

* ci(drone): remove echo commands from canary release step

* docs: add missing backtick

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

scripts/master.star

@@ -25,7 +25,7 @@ load(
     'enterprise_downstream_step',
     'frontend_metrics_step',
     'publish_storybook_step',
-    'release_next_npm_packages_step',
+    'release_canary_npm_packages_step',
     'upload_packages_step',
     'deploy_to_kubernetes_step',
     'publish_packages_step',
@@ -60,7 +60,7 @@ def get_steps(edition, is_downstream=False):
         build_docker_images_step(edition=edition, ver_mode=ver_mode, ubuntu=True, publish=publish),
         postgres_integration_tests_step(),
         mysql_integration_tests_step(),
-        release_next_npm_packages_step(edition),
+        release_canary_npm_packages_step(edition),
         upload_packages_step(edition=edition, ver_mode=ver_mode, is_downstream=is_downstream),
         deploy_to_kubernetes_step(edition=edition, is_downstream=is_downstream),
     ]