chore: add 1.21.3 changelog

Katie Horne · Katie Horne · commit 54024c17eb6a · 2021-09-13T16:25:17.000-05:00
diff --git a/changelog/1.21.3.md b/changelog/1.21.3.md
@@ -0,0 +1,20 @@
+---
+title: "1.21.3"
+description: "Released on 09/13/2021"
+---
+
+### Breaking changes ❗
+
+There are no breaking changes in 1.21.3.
+
+### Features ✨
+
+There are no new features in 1.21.3.
+
+### Bug fixes 🐛
+
+- infra: Fixed goroutine/memory leaks.
+
+### Security updates 🔐
+
+There are no security updates in 1.21.3.
diff --git a/manifest.json b/manifest.json
@@ -411,6 +411,9 @@
     {
       "path": "./changelog/index.md",
       "children": [
+        {
+          "path": "./changelog/1.21.3.md"
+        },
         {
           "path": "./changelog/1.21.2.md"
         },
