add announcement that prometheus.exporter.vsphere was deprecated in v0.40 (#6731)

The intent was the prometheus.exporter.vsphere was deprecated in v0.40,
but this was mistakenly omitted from the release. This commit adds the
deprecation notice.

Author: rfratto

CHANGELOG.md

@@ -108,7 +108,9 @@ v0.40.0 (2024-02-27)
 
 ### Deprecations
 
-- Module components have been deprecated in favor of import and declare configuration blocks. These deprecated components will be removed in the next release. (@wildum)
+- Module components have been deprecated in favor of import and declare configuration blocks. These deprecated components will be removed in a future release. (@wildum)
+
+- `prometheus.exporter.vsphere` has been deprecated in favor of `otelcol.receiver.vcenter`. This deprecated component will be removed in a future release. (@rfratto)
 
 ### Features
 

docs/sources/flow/reference/components/prometheus.exporter.vsphere.md

@@ -9,15 +9,19 @@ title: prometheus.exporter.vsphere
 description: Learn about prometheus.exporter.vsphere
 ---
 
-# prometheus.exporter.vsphere
+# prometheus.exporter.vsphere (deprecated)
 
-The `prometheus.exporter.vsphere` component embeds [`vmware_exporter`](https://github.com/grafana/vmware_exporter) to collect vSphere metrics
+{{< admonition type="caution" >}}
+Starting with release v0.40, `prometheus.exporter.vsphere` is deprecated. Consider using `otelcol.receiver.vcenter` instead.
+`prometheus.exporter.vsphere` will be removed in a future release.
+{{< /admonition >}}
+
+The `prometheus.exporter.vsphere` component embeds [`vmware_exporter`](https://github.com/grafana/vmware_exporter) to collect vSphere metrics.
 
 > **NOTE**: We recommend to use [otelcol.receiver.vcenter][] instead.
 
 [otelcol.receiver.vcenter]: {{< relref "./otelcol.receiver.vcenter.md" >}}
 
-
 ## Usage
 
 ```river

docs/sources/flow/release-notes.md

@@ -36,10 +36,6 @@ Other release notes for the different {{< param "PRODUCT_ROOT_NAME" >}} variants
 The default listen port for `otelcol.receiver.opencensus` has changed from 4317 to 55678 to align with the upstream defaults.
 To retain the previous listen port, explicitly set the `endpoint` argument to `0.0.0.0:4317` before upgrading.
 
-### Breaking change: classic modules have been removed
-
-Classic modules (the `module.git`, `module.file`, `module.http`, and `module.string` components) were initially deprecated in v0.40 in favor of the `import` and `declare` configuration blocks, and have been removed as of this release.
-
 ## v0.40
 
 ### Breaking change: Prohibit the configuration of services within modules.
@@ -57,11 +53,17 @@ If you need to see high cardinality metrics containing labels such as IP address
 The name `prometheus.exporter.agent` is potentially ambiguous and can be misinterpreted as an exporter for Prometheus Agent.
 The new name reflects the component's true purpose as an exporter of the process's own metrics.
 
-### Deprecation: classic modules have been deprecated and will be removed in the next release
+### Deprecation: classic modules have been deprecated and will be removed in a future release
 
 Classic modules (the `module.git`, `module.file`, `module.http`, and `module.string` components) have been deprecated in favor of the new `import` and `declare` configuration blocks.
 
-Support for classic modules will be removed in the next release.
+Support for classic modules will be removed in a future release.
+
+### Deprecation: `prometheus.exporter.vsphere` is deprecated and will be removed in a future release
+
+The `prometheus.exporter.vsphere` component has been deprecated in favor of `otelcol.receiver.vcenter`.
+
+Support for `prometheus.exporter.vsphere` will be removed in a future release.
 
 ## v0.39