chore: update changelog for release

Author: SimenB

CHANGELOG.md

@@ -2,6 +2,16 @@
 
 ### Features
 
+### Fixes
+
+### Chore & Maintenance
+
+### Performance
+
+## 26.1.0
+
+### Features
+
 - `[jest-mock]` Export `Mock`, `MockInstance`, `SpyInstance` types ([#10138](https://github.com/facebook/jest/pull/10138))
 - `[jest-config]` Support config files exporting (`async`) `function`s ([#10001](https://github.com/facebook/jest/pull/10001))
 - `[jest-cli, jest-core]` Add `--selectProjects` CLI argument to filter test suites by project name ([#8612](https://github.com/facebook/jest/pull/8612))