packages/prometheus: Upgrade to package format_version v3

packages/prometheus/changelog.yml

@@ -1,4 +1,9 @@
 # newer versions go on top
+- version: "1.21.0"
+  changes:
+    - description: Upgrade the package format_version to 3.3.0.
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/11988
 - version: "1.20.1"
   changes:
     - description: Improve documentation to replace references to Metricbeat with Elastic Agent.

packages/prometheus/data_stream/collector/manifest.yml

@@ -178,6 +178,7 @@ streams:
         default: false
         description: >
           Enable `Metrics Count` to get the total number of Prometheus metrics contained within the Elasticsearch document.
+
       - name: processors
         type: yaml
         title: Processors

packages/prometheus/data_stream/remote_write/manifest.yml

@@ -102,6 +102,7 @@ streams:
         default: false
         description: >
           Enable `Metrics Count` to get the total number of Prometheus metrics contained within the Elasticsearch document.
+
       - name: processors
         type: yaml
         title: Processors

packages/prometheus/manifest.yml

@@ -1,15 +1,18 @@
-format_version: 2.10.0
+format_version: "3.3.0"
 name: prometheus
 title: Prometheus
-version: 1.20.1
+version: 1.21.0
 description: Collect metrics from Prometheus servers with Elastic Agent.
 type: integration
 categories:
   - observability
   - monitoring
   - containers
 conditions:
-  kibana.version: "^8.16.0"
+  kibana:
+    version: "^8.16.0"
+  elastic:
+    subscription: basic
 screenshots:
   - src: /img/prometheus-server-overview.png
     title: Metricbeat Prometheus Overview
@@ -30,3 +33,4 @@ policy_templates:
         description: Collecting metrics from Prometheus exporters, Prometheus query API as well as able to receive metrics via remote write functionality.
 owner:
   github: elastic/obs-infraobs-integrations
+  type: elastic