[extension] Mark module as stable (#12461)

<!--Ex. Fixing a bug - Describe the bug and how this fixes the issue.
Ex. Adding a feature - Explain what this achieves.-->
#### Description
<!-- Issue number if applicable -->

Marks module as stable.

This does **not** mark `extensiontest` or `extension/auth` as stable.

#### Link to tracking issue
Fixes #11005

---------

Co-authored-by: Jade Guiton <[email protected]>

Author: mx-psi

.chloggen/mx-psi_extension-1.0-bis.yaml

@@ -0,0 +1,25 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: extension
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Mark module as stable
+
+# One or more tracking issues or pull requests related to the change
+issues: [11005]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [api]

versions.yaml

@@ -21,6 +21,7 @@ module-sets:
       - go.opentelemetry.io/collector/config/configtls
       - go.opentelemetry.io/collector/config/confignet
       - go.opentelemetry.io/collector/consumer
+      - go.opentelemetry.io/collector/extension
   beta:
     version: v0.120.0
     modules:
@@ -55,7 +56,6 @@ module-sets:
       - go.opentelemetry.io/collector/exporter/otlpexporter
       - go.opentelemetry.io/collector/exporter/otlphttpexporter
       - go.opentelemetry.io/collector/exporter/xexporter
-      - go.opentelemetry.io/collector/extension
       - go.opentelemetry.io/collector/extension/extensionauth
       - go.opentelemetry.io/collector/extension/extensionauth/extensionauthtest
       - go.opentelemetry.io/collector/extension/auth