doc: Update release notes for v1.13.1 (#4063)

* doc: Update release notes for v1.13.1

* Update docs/sources/release-notes/v1-13.md

Co-authored-by: Marc Sanmiquel <marcsanmiquel@gmail.com>

---------

Co-authored-by: Marc Sanmiquel <marcsanmiquel@gmail.com>

Author: simonswine

docs/sources/release-notes/v1-13.md

@@ -0,0 +1,35 @@
+---
+title: Version 1.13 release notes
+menuTitle: V1.13
+description: Release notes for Grafana Pyroscope 1.13
+weight: 250
+---
+
+## Version 1.13.1 release notes
+
+To address bugs found in v1.13.0, we have released a patch version
+
+Notable changes are listed below. For more details, check out the [1.13.1 changelog](https://github.com/grafana/pyroscope/compare/v1.13.0...v1.13.1).
+
+### Fixes
+
+* Storage prefix validation ([#4044](https://github.com/grafana/pyroscope/pull/4044))
+* Update minio-go to restore AWS STS auth ([#4056](https://github.com/grafana/pyroscope/pull/4056))
+
+## Version 1.13.0 release notes
+
+The Pyroscope team is excited to present Grafana Pyroscope 1.13.0
+
+This release contains enhancements, improves stability & performance.
+
+Notable changes are listed below. For more details, check out the [1.13.0 changelog](https://github.com/grafana/pyroscope/compare/v1.12.0...v1.13.0).
+
+### Enhancements
+* gzip: escape heap allocation ([#3922](https://github.com/grafana/pyroscope/pull/3922))
+* perf: add log buffer ([#3947](https://github.com/grafana/pyroscope/pull/3947))
+* perf: add async log writer ([#3953](https://github.com/grafana/pyroscope/pull/3953))
+
+### Fixes
+* Remove duplicate service_name and app_name labels during ingestion ([#3951](https://github.com/grafana/pyroscope/pull/3951))
+* IPv6 support fixes ([#3919](https://github.com/grafana/pyroscope/pull/3919))
+* Drop negative samples ([#3955](https://github.com/grafana/pyroscope/pull/3955))