mgmt, lite release for mysql and postgresql (Azure#22920)

* regen mysql

* regen postgresql

* update chanagelog date

mgmt, lite release for mysql and postgresql (Azure#22920)

* regen mysql

* regen postgresql

* update chanagelog date

mgmt, lite release for mysql and postgresql (Azure#22920)

* regen mysql

* regen postgresql

* update chanagelog date

Adding architecture docs. (Azure#22371)

* Add architecture diagram for prefetch.

* Adding a receive flow and architecture UML.

* Adding documentation to reactor dispatcher.

* Add documentation.

* Update diagram

* Update sdk/core/azure-core-amqp/docs/architecture.md

Adding architecture docs. (Azure#22371)

* Add architecture diagram for prefetch.

* Adding a receive flow and architecture UML.

* Adding documentation to reactor dispatcher.

* Add documentation.

* Update diagram

* Update sdk/core/azure-core-amqp/docs/architecture.md

Updated Key Vault Keys CHANGELOG for beta release. (Azure#22905)

* Updated Key Vault Keys CHANGELOG.

* Update sdk/keyvault/azure-security-keyvault-keys/CHANGELOG.md

Co-authored-by: Sameeksha Vaity <sameeksha.v91@gmail.com>

Co-authored-by: Sameeksha Vaity <sameeksha.v91@gmail.com>

Preparing Key Vault stable releases for July 2021 (Azure#22864)

* Bumped versions and updated CHANGELOG and README.

* Added SpotBugs exceptions for Base64UrlJsonDeserializer.deserialize() and ByteExtensions.clone().

* Fixed package for SpotBugs exception.

Preparing Key Vault stable releases for July 2021 (Azure#22864)

* Bumped versions and updated CHANGELOG and README.

* Added SpotBugs exceptions for Base64UrlJsonDeserializer.deserialize() and ByteExtensions.clone().

* Fixed package for SpotBugs exception.

Preparing Key Vault stable releases for July 2021 (Azure#22864)

* Bumped versions and updated CHANGELOG and README.

* Added SpotBugs exceptions for Base64UrlJsonDeserializer.deserialize() and ByteExtensions.clone().

* Fixed package for SpotBugs exception.

Preparing Key Vault stable releases for July 2021 (Azure#22864)

* Bumped versions and updated CHANGELOG and README.

* Added SpotBugs exceptions for Base64UrlJsonDeserializer.deserialize() and ByteExtensions.clone().

* Fixed package for SpotBugs exception.