Update CHANGELOG.md

CHANGELOG.md

@@ -8,6 +8,7 @@
 - `[expect]` Add `BigInt` support to `toBeGreaterThan`, `toBeGreaterThanOrEqual`, `toBeLessThan` and `toBeLessThanOrEqual` ([#8382](https://github.com/facebook/jest/pull/8382))
 - `[expect, jest-matcher-utils]` Display change counts in annotation lines ([#9035](https://github.com/facebook/jest/pull/9035))
 - `[expect, jest-snapshot]` Support custom inline snapshot matchers ([#9278](https://github.com/facebook/jest/pull/9278))
+- `[jest-cli, jest-config, jest-reporter]` Add `longTestThreshold` configuration option ([#9366](https://github.com/facebook/jest/pull/9366))
 - `[jest-config]` Throw the full error message and stack when a Jest preset is missing a dependency ([#8924](https://github.com/facebook/jest/pull/8924))
 - `[jest-config]` [**BREAKING**] Set default display name color based on runner ([#8689](https://github.com/facebook/jest/pull/8689))
 - `[jest-config]` Merge preset globals with project globals ([#9027](https://github.com/facebook/jest/pull/9027))