docs: update CHANGELOG for version 2.6

Author: johzchen

CHANGELOG.md

@@ -19,6 +19,7 @@
 
 # Table of Contents
 
+- [2.6.0](#260)
 - [2.5.0](#250)
 - [2.4.0](#240)
 - [2.3.0](#230)
@@ -29,6 +30,51 @@
 - [1.5.0](#150)
 - [1.0.0](#100)
 
+# 2.6.0
+
+This release mainly improves UI and UE, bugfix and adds test cases.
+
+`Manager API` 2.6 should be used with [Apache APISIX 2.5](https://apisix.apache.org/downloads/). It is not recommended to use with other Apache APISIX versions.
+
+### Core
+
+- Change: remove listen.host from api/conf/conf.yaml [#1767](https://github.com/apache/apisix-dashboard/pull/1767)  
+- Change: remove ID of consumer [#1745](https://github.com/apache/apisix-dashboard/pull/1745)
+- Feat: Support duplicate one existing Route [#1558](https://github.com/apache/apisix-dashboard/pull/1558)
+- Feat: add response header in debug view [#1691](https://github.com/apache/apisix-dashboard/pull/1691)
+- Feat: add basic-auth UI Form [#1718](https://github.com/apache/apisix-dashboard/pull/1718)
+- Feat: add limit-count plugin form [#1739](https://github.com/apache/apisix-dashboard/pull/1739)
+- Feat: add referer-restriction plugin form [#1727](https://github.com/apache/apisix-dashboard/pull/1727)
+- Feat: added cors plugin form [#1733](https://github.com/apache/apisix-dashboard/pull/1733)
+- Feat: added limit-req plugin form [#1732](https://github.com/apache/apisix-dashboard/pull/1732)
+- Feat: add api-breaker plugin form [#1730](https://github.com/apache/apisix-dashboard/pull/1730)
+- Feat: add proxy-mirror plugin form [#1725](https://github.com/apache/apisix-dashboard/pull/1725)
+- Feat: add limit-conn plugin form [#1728](https://github.com/apache/apisix-dashboard/pull/1728)
+- Feat: refactor upstream form module [#1726](https://github.com/apache/apisix-dashboard/pull/1726)
+- Feat: added types for Plugins [#1736](https://github.com/apache/apisix-dashboard/pull/1736)
+- Feat: support auto build rpm package for dashboard [#1766](https://github.com/apache/apisix-dashboard/pull/1766) 
+- Feat: improve UI and UE ([#1674](https://github.com/apache/apisix-dashboard/pull/1674), [#1702](https://github.com/apache/apisix-dashboard/pull/1702), [#1707](https://github.com/apache/apisix-dashboard/pull/1707),[#1715](https://github.com/apache/apisix-dashboard/pull/1715), [#1723](https://github.com/apache/apisix-dashboard/pull/1723), [#1782](https://github.com/apache/apisix-dashboard/pull/1782), [#1610](https://github.com/apache/apisix-dashboard/pull/1610), [#1764](https://github.com/apache/apisix-dashboard/pull/1764), [#1735](https://github.com/apache/apisix-dashboard/pull/1735), [#1771](https://github.com/apache/apisix-dashboard/pull/1771), [#1748](https://github.com/apache/apisix-dashboard/pull/1748), [#1749](https://github.com/apache/apisix-dashboard/pull/1749), [#1751](https://github.com/apache/apisix-dashboard/pull/1751), [#1679](https://github.com/apache/apisix-dashboard/pull/1679), [#1750](https://github.com/apache/apisix-dashboard/pull/1750), [#1731](https://github.com/apache/apisix-dashboard/pull/1731), [#1747](https://github.com/apache/apisix-dashboard/pull/1747))
+
+### Bugfix
+
+- Fix: unable to export route with nil methods field [#1673](https://github.com/apache/apisix-dashboard/pull/1673)
+- Fix: incorrect conversion between integer types [#1753](https://github.com/apache/apisix-dashboard/pull/1753)
+- Fix: user login request should remove its own prefix option [#1701](https://github.com/apache/apisix-dashboard/pull/1701)
+- Fix: show correct health checker [#1784](https://github.com/apache/apisix-dashboard/pull/1784)
+
+### Test Case
+
+- Test: use gomega match assertion [#1678](https://github.com/apache/apisix-dashboard/pull/1678)
+- Test: updated cli_test.sh according reg ex [#1696](https://github.com/apache/apisix-dashboard/pull/1696)
+- Test: reduce FE e2e ci time [#1698](https://github.com/apache/apisix-dashboard/pull/1698) [#1762](https://github.com/apache/apisix-dashboard/pull/1762)
+- Test: adding a retry mechanism to FE testing [#1752](https://github.com/apache/apisix-dashboard/pull/1752)
+- Test: fix online debug test case [#1761](https://github.com/apache/apisix-dashboard/pull/1761)
+- Test: write backend e2e with ginkgo ([#1663](https://github.com/apache/apisix-dashboard/pull/1663), [#1677](https://github.com/apache/apisix-dashboard/pull/1677), [#1675](https://github.com/apache/apisix-dashboard/pull/1675), [#1676](https://github.com/apache/apisix-dashboard/pull/1676), [#1704](https://github.com/apache/apisix-dashboard/pull/1704), [#1755](https://github.com/apache/apisix-dashboard/pull/1755))
+
+### Doc
+
+- Docs: add more details and examples to import openapi guide [#1672](https://github.com/apache/apisix-dashboard/pull/1672)
+
 # 2.5.0
 
 This release mainly improves basic features, bugfix and adds test cases.