[#5695] Add a plugin SPI for configuration encryption and decryption for Nacos 2.0 [#5696] Add a plugin SPI for authentication for Nacos 2.0. [#7930] Default close support upgrade from 1.X feature. [#7992] Support cluster grpc client to set thread pool size. [#8220] Add reset raft cluster operation.
## Enhancement & Refactor
[#7487] Add generics for the CacheBuilder. [#7879] Refactor destroy method of AbstractMemberLookup. [#7924][#8214] Add ldap auth plugin. [#7952] Ignore read request for raft follower's state machine to enhance raft stability. [#7966] Add more information in Auth/Distro/Curcuit-Filter when cause some server error. [#7971] Stop version judge Task and release thread after upgrade completely. [#8072] Enhance memory cost in DistroProtocol initialization. [#8107] Enhance console change password operation. [#8156] Support js and css of console auto-upgrade.
## BugFix
[#1717][#7359] Fix XSS vulnerabilities. [#6273] Fix loop request for offline server nodes API. [#6999] Fix Nacos client does not support logback overload log configuration. [#7757] Fix jraft read request deserialize to write request problem. [#7780] Fix config a-b-a problem. [#7941] Fix version comparison error in Config Detail page. [#8087] Fix text out of box in configuration manager. [#8108] Fix throw NPR for health check for v2. [#8050] Fix configuration about Distro changes could not take effect. [#8161] Fix console can't use relative path problem. [#8163] Fix multi-instance share the same local snapshot. [#8196] Fix subscriber api without count when the query number is more than subscriber count.
## Dependency
[#7758] Update module nacos-consistency protobuf-maven-plugin version to 0.6.1. [#7886] Enhance package scan logic and remove org.reflections dependency.
## Tests
[#4981] Add much unit test. [#8009] Fix NPE of unit test.
