Update CHANGELOG for release v3.8.3-patch.1 (#3164)

Co-authored-by: withchao <48119764+withchao@users.noreply.github.com>

Author: github-actions[bot]

CHANGELOG/CHANGELOG-3.8.md

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+## [v3.8.3-patch.1](https://github.com/openimsdk/open-im-server/releases/tag/v3.8.3-patch.1) 	(2025-02-25)
+
+### New Features
+* feat: add backup volume && optimize log print [Created [#3121](https://github.com/openimsdk/open-im-server/pull/3121)
+
+### Bug Fixes
+* fix: seq conversion failed without exiting [Created [#3120](https://github.com/openimsdk/open-im-server/pull/3120)
+* fix: check error in BatchSetTokenMapByUidPid [Created [#3123](https://github.com/openimsdk/open-im-server/pull/3123)
+* fix: DeleteDoc crash [Created [#3124](https://github.com/openimsdk/open-im-server/pull/3124)
+* fix: the abnormal message has no sending time, causing the SDK to be abnormal [Created [#3126](https://github.com/openimsdk/open-im-server/pull/3126)
+* fix: crash caused [#3127](https://github.com/openimsdk/open-im-server/pull/3127)
+* fix: the user sets the conversation timer cleanup timestamp unit incorrectly [Created [#3128](https://github.com/openimsdk/open-im-server/pull/3128)
+* fix: seq conversion not reading env in docker environment [Created [#3131](https://github.com/openimsdk/open-im-server/pull/3131)
+
+### Builds
+* build: improve workflows contents. [Created [#3125](https://github.com/openimsdk/open-im-server/pull/3125)
+
+**Full Changelog**: [v3.8.3-e-v1.1.5...v3.8.3-patch.1-e-v1.1.5](https://github.com/openimsdk/open-im-server-enterprise/compare/v3.8.3-e-v1.1.5...v3.8.3-patch.1-e-v1.1.5)
+

CHANGELOG/README.md

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+# CHANGELOGs
+
+- [CHANGELOG-3.8.md](./CHANGELOG-3.8.md)
+