chore: add changelogs for 1.21.3 and 1.22.1 (#600)

Author: Katie Horne

changelog/1.21.3.md

@@ -0,0 +1,22 @@
+---
+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 🐛
+
+> Coder v1.21.3 includes bug fixes backported from v1.22.1.
+
+- infra: Fixed goroutine/memory leaks.
+
+### Security updates 🔐
+
+There are no security updates in 1.21.3.

changelog/1.22.1.md

@@ -0,0 +1,21 @@
+---
+title: "1.22.1"
+description: "Released on 09/13/2021"
+---
+
+### Breaking changes ❗
+
+There are no breaking changes in 1.22.1.
+
+### Features ✨
+
+There are no new features in 1.22.1.
+
+### Bug fixes 🐛
+
+- infra: Fixed goroutine/memory leaks.
+- infra: Fixed issue where Kubernetes labels were parsed incorrectly.
+
+### Security updates 🔐
+
+There are no security updates in 1.22.1.

manifest.json

@@ -414,9 +414,15 @@
     {
       "path": "./changelog/index.md",
       "children": [
+        {
+          "path": "./changelog/1.22.1.md"
+        },
         {
           "path": "./changelog/1.22.0.md"
         },
+        {
+          "path": "./changelog/1.21.3.md"
+        },
         {
           "path": "./changelog/1.21.2.md"
         },