rel: prepare v3.0.1 (#1742)

## Which problem is this PR solving?

Prepare release notes and changelogs for v3.0.1

Author: VinozzZ

CHANGELOG.md

@@ -1,5 +1,20 @@
 # Refinery Changelog
 
+## 3.0.1 2025-11-10
+
+### 🐛 Fixes
+
+- fix: use sendKey for rule matching if it's configured by @VinozzZ in https://github.com/honeycombio/refinery/pull/1735
+- fix: sampleRate incoming as resource attribute by @robbkidd in https://github.com/honeycombio/refinery/pull/1739
+
+### 🛠 Maintenance
+
+- maint: correct README.md to reflect the latest changes by @VinozzZ in https://github.com/honeycombio/refinery/pull/1690
+- maint: upgrade to go 1.25 by @robbkidd in https://github.com/honeycombio/refinery/pull/1715
+- maint: remove automaxprocs dependency by @robbkidd in https://github.com/honeycombio/refinery/pull/1725
+- fix(ci): publish multi-arch image to multiple registry by @VinozzZ in https://github.com/honeycombio/refinery/pull/1709
+- docs: update to document v2.x limited support by @robbkidd in https://github.com/honeycombio/refinery/pull/1729
+
 ## 3.0.0 2025-10-02
 
 This is a performance improvement release, focused on memory and CPU efficiency.

RELEASE_NOTES.md

@@ -2,6 +2,10 @@
 
 While [CHANGELOG.md](./CHANGELOG.md) contains detailed documentation and links to all the source code changes in a given release, this document is intended to be aimed at a more comprehensible version of the contents of the release from the point of view of users of Refinery.
 
+## Version 3.0.1
+
+This is a bug fix release to fix a regression in recording original sample rate from OTLP resource attributes and rule matching with send key configured.
+
 ## Version 3.0.0
 
 This is a performance improvement release, focused on memory and CPU efficiency.