[release/1.32.x-0.53bx] Prepare for 1.32.1 (#4545)

* Add unreleased changelog entry

* Point workflows to contrib release branch

Author: xrmx

.github/workflows/contrib.yml

@@ -15,4 +15,4 @@ jobs:
     uses: open-telemetry/opentelemetry-python-contrib/.github/workflows/core_contrib_test_0.yml@main
     with:
       CORE_REPO_SHA: ${{ github.sha }}
-      CONTRIB_REPO_SHA: opentelemetrybot/prepare-release-1.32.0-0.53b0
+      CONTRIB_REPO_SHA: release/v1.32.x-0.53bx

.github/workflows/lint_0.yml

@@ -15,7 +15,7 @@ concurrency:
 
 env:
   CORE_REPO_SHA: main
-  CONTRIB_REPO_SHA: opentelemetrybot/prepare-release-1.32.0-0.53b0
+  CONTRIB_REPO_SHA: release/v1.32.x-0.53bx
   PIP_EXISTS_ACTION: w
 
 jobs:

.github/workflows/misc_0.yml

@@ -15,7 +15,7 @@ concurrency:
 
 env:
   CORE_REPO_SHA: main
-  CONTRIB_REPO_SHA: opentelemetrybot/prepare-release-1.32.0-0.53b0
+  CONTRIB_REPO_SHA: release/v1.32.x-0.53bx
   PIP_EXISTS_ACTION: w
 
 jobs:

.github/workflows/test_0.yml

@@ -15,7 +15,7 @@ concurrency:
 
 env:
   CORE_REPO_SHA: main
-  CONTRIB_REPO_SHA: opentelemetrybot/prepare-release-1.32.0-0.53b0
+  CONTRIB_REPO_SHA: release/v1.32.x-0.53bx
   PIP_EXISTS_ACTION: w
 
 jobs:

.github/workflows/test_1.yml

@@ -15,7 +15,7 @@ concurrency:
 
 env:
   CORE_REPO_SHA: main
-  CONTRIB_REPO_SHA: opentelemetrybot/prepare-release-1.32.0-0.53b0
+  CONTRIB_REPO_SHA: release/v1.32.x-0.53bx
   PIP_EXISTS_ACTION: w
 
 jobs:

CHANGELOG.md

@@ -5,6 +5,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
 ## Version 1.32.0/0.53b0 (2025-04-10)
 
 - Fix user agent in OTLP HTTP metrics exporter