docs: Move the stale-while-revalidate entries under 2.7.0 (#154)

They shipped in 2.7.0 via #139 but sat in a hand-written Unreleased block above the generated sections.

Author: georgeguimaraes

CHANGELOG.md

@@ -1,8 +1,3 @@
-## Unreleased
-
-* Added support for `Cache-Control: stale-while-revalidate`.
-* Added `:on_stale` middleware callback hook to trigger custom background refresh logic when stale cached responses are served.
-
 ## [3.0.0](https://github.com/sourcelevel/faraday-http-cache/compare/v2.8.0...v3.0.0) (2026-09-15)
 
 
@@ -53,6 +48,12 @@
 ## [2.7.0](https://github.com/sourcelevel/faraday-http-cache/compare/v2.6.1...v2.7.0) (2026-04-14)
 
 
+### Features
+
+* Added support for `Cache-Control: stale-while-revalidate` ([#139](https://github.com/sourcelevel/faraday-http-cache/pull/139))
+* Added `:on_stale` middleware callback hook to trigger custom background refresh logic when stale cached responses are served ([#139](https://github.com/sourcelevel/faraday-http-cache/pull/139))
+
+
 ### Miscellaneous
 
 * add release-please for automated releases to RubyGems ([3e0f9ff](https://github.com/sourcelevel/faraday-http-cache/commit/3e0f9ff2a132438dda0c4980133a8cddf15a448d))