Add changelog for 0.21.1 (msgspec#1020)

Co-authored-by: aleksandr.tseluyko <[email protected]>

Update changelog for release 0.21.0 (msgspec#1001)

Make GitHub action resilient to release runs (msgspec#953)

Update changelog for 0.19.0

Version 0.18.6

Update changelog for 0.18.5

Release 0.18.4

Release 0.18.3

Release 0.18.3

Update changelog for 0.18.1