Fix wgpu version in CHANGELOG (#1287)

See https://github.com/linebender/vello/pull/1285

CHANGELOG.md

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e2ea6bd..bcfb05a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,7 +17,7 @@
 
 ### Changed
 
-- Breaking change: wgpu has been updated to wgpu 26. ([#1280][] by [@theoparis][])  
+- Breaking change: wgpu has been updated to wgpu 27. ([#1280][] by [@theoparis][])  
 
 ### Fixed