Prepare for release: v5.6.2 (celery#2434)

* Bump version: 5.6.1 → 5.6.2

* Added Changelog for v5.6.2

Prepare for release: v5.6.1 (celery#2416)

* Bump version: 5.6.0 → 5.6.1

* Added Changelog for v5.6.1

Prepare for release: v5.6.0 (celery#2402)

* Bump version: 5.6.0rc2 → 5.6.0

* Added Changelog for v5.6.0

Prepare for (pre) release: v5.6.0rc2 (celery#2396)

* Bump version: 5.6.0rc1 → 5.6.0rc2

* Added Changelog for v5.6.0rc2

Prepare for (pre) release: v5.6.0rc1 (celery#2369)

* Bump version: 5.6.0b3 → 5.6.0rc1

* Added Changelog for v5.6.0rc1

Prepare for (pre) release: v5.6.0b3 (celery#2359)

* Bump version: 5.6.0b2 → 5.6.0b3

* Added Changelog for v5.6.0b3

Prepare for (pre) release: v5.6.0b2 (celery#2349)

* Bump version: 5.6.0b1 → 5.6.0b2

* Added Changelog for v5.6.0b2

Prepare for (pre) release: v5.6.0b1 (celery#2343)

* Bump version: 5.5.4 → 5.6.0b1

* Added Changelog for v5.6.0b1

Prepare for release: v5.5.4 (celery#2309)

* Bump version: 5.5.3 → 5.5.4

* Added Changelog for v5.5.4

Prepare for release: v5.5.3 (celery#2288)

* Bump version: 5.5.2 → 5.5.3

* Added Changelog for v5.5.3