rel: Prepare v2.6.1 release (#1209)

## Which problem is this PR solving?

Prepares the next release of Refinery for publishing.

## Short description of the changes
- Add change log entry
- Add release notes entry

---------

Co-authored-by: Kent Quirk <[email protected]>

Author: MikeGoldsmith

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Refinery Changelog
 
+## 2.6.1 2024-06-17
+
+### Fixes
+
+- fix: Don’t consider log events as root spans (#1208) | @MikeGoldsmith
+
+### Maintenance
+
+- maint(deps): bump the minor-patch group with 9 updates (#1198) | @dependabot
+
 ## 2.6.0 2024-06-17
 
 ### Features

RELEASE_NOTES.md

@@ -2,6 +2,13 @@
 
 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 2.6.1
+
+This is a bug fix release. 
+In the log handling logic newly introduced in v2.6.0, Refinery would incorrectly consider log events to be root spans in a trace.
+After this fix, log events can never be root spans.
+This is recommended for everyone who wants to use the new log handling capabilities.
+
 ## Version 2.6.0
 
 With this release, Refinery begins the process of integrating multiple telemetry signal types by handling logs as well as traces.