CI: Automate Grafana releases (#43897) (#43911)

* CI: Automate releases

* Update grabpl version

(cherry picked from commit 4f47832bac)

scripts/drone/steps/lib.star

@@ -974,7 +974,7 @@ def store_packages_step(edition, ver_mode, is_downstream=False):
         'name': 'store-packages-{}'.format(edition),
         'image': publish_image,
         'depends_on': [
-            'initialize',
+            'grabpl',
         ],
         'environment': {
             'GRAFANA_COM_API_KEY': from_secret('grafana_api_key'),
@@ -1003,7 +1003,7 @@ def get_windows_steps(edition, ver_mode, is_downstream=False):
     else:
         init_cmds.extend([
             '$$ProgressPreference = "SilentlyContinue"',
-            'Invoke-WebRequest https://grafana-downloads.storage.googleapis.com/grafana-build-pipeline/v{}/windows/grabpl.exe -OutFile grabpl.exe'.format(
+            'Invoke-WebRequest https://grafana-downloads.storage.googleapis.com/grafana-build-pipeline/{}/windows/grabpl.exe -OutFile grabpl.exe'.format(
                 grabpl_version),
         ])
     steps = [
@@ -1077,7 +1077,7 @@ def get_windows_steps(edition, ver_mode, is_downstream=False):
         # For enterprise, we have to clone both OSS and enterprise and merge the latter into the former
         download_grabpl_step_cmds = [
             '$$ProgressPreference = "SilentlyContinue"',
-            'Invoke-WebRequest https://grafana-downloads.storage.googleapis.com/grafana-build-pipeline/v{}/windows/grabpl.exe -OutFile grabpl.exe'.format(
+            'Invoke-WebRequest https://grafana-downloads.storage.googleapis.com/grafana-build-pipeline/{}/windows/grabpl.exe -OutFile grabpl.exe'.format(
                 grabpl_version),
         ]
         clone_cmds = [