docs: release notes for the v21.2.0-rc.0 release

Author: dgp1130

CHANGELOG.md

@@ -1,3 +1,9 @@
+<a name="21.2.0-rc.0"></a>
+
+# 21.2.0-rc.0 (2026-02-18)
+
+<!-- CHANGELOG SPLIT MARKER -->
+
 <a name="19.2.20"></a>
 
 # 19.2.20 (2026-02-13)
@@ -2401,7 +2407,6 @@
 - Protractor is no longer supported.
 
   Protractor was marked end-of-life in August 2023 (see https://protractortest.org/). Projects still relying on Protractor should consider migrating to another E2E testing framework, several support solid migration paths from Protractor.
-
   - https://angular.dev/tools/cli/end-to-end
   - https://blog.angular.dev/the-state-of-end-to-end-testing-with-angular-d175f751cb9c
 
@@ -6036,7 +6041,6 @@ Alan Agius, Charles Lyding and Doug Parker
 ### @angular/cli
 
 - Several changes to the `ng analytics` command syntax.
-
   - `ng analytics project <setting>` has been replaced with `ng analytics <setting>`
   - `ng analytics <setting>` has been replaced with `ng analytics <setting> --global`
 
@@ -6066,7 +6070,6 @@ Alan Agius, Charles Lyding and Doug Parker
 - `browser` and `karma` builders `script` and `styles` options input files extensions are now validated.
 
   Valid extensions for `scripts` are:
-
   - `.js`
   - `.cjs`
   - `.mjs`
@@ -6075,7 +6078,6 @@ Alan Agius, Charles Lyding and Doug Parker
   - `.mjsx`
 
   Valid extensions for `styles` are:
-
   - `.css`
   - `.less`
   - `.sass`