Release notes for 1.34.1 (#6536)

<img width="926" height="517" alt="스크린샷 2025-12-03 오후 3 47 09"
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Author: jrhee17

site/src/pages/release-notes/1.34.0.mdx

@@ -103,13 +103,24 @@ date: 2025-11-28
         .relayStateMaxLength(256) // 👈👈👈 Default is 80
         ...
   ```
+- **Easier Certificate Chain Testing**: You can now use <type://SignedCertificateExtension> to generate certificate chains. #6519
+```java
+  @Order(1)
+  @RegisterExtension
+  static var caCert = new SelfSignedCertificateExtension();
+
+  @Order(2)
+  @RegisterExtension
+  static var leafCert = new SignedCertificateExtension(caCert);
+  ```
 
 ## 📈 Improvements
 
 - Comprehensive improvements to the `armeria-xds` module. #6470 #6469 #6468 #6474 #6475 #6403 #6366 #6461
   - Improved logs and metrics for better observability.
   - `protoc-gen-validate` is applied for all xDS resources by default.
   - Support for Envoy's `RetryPolicy` has been added.
+- You may adjust stacktrace generation for <type://CancelledSubscriptionException> using `verboseExceptionSampler`. #6525
 
 ## 🛠️ Bug fixes
 

site/src/pages/release-notes/1.34.1.mdx

@@ -0,0 +1,17 @@
+---
+date: 2025-12-03
+---
+
+## 🛠️ Bug fixes
+
+- You can now generate self-signed certificates with one or more Subject Alternative Names. #6534
+- The `xds` module no longer brings in dependencies with binary incompatibility. #6532
+
+## 🙇 Thank you
+
+<ThankYou usernames={[
+  'ikhoon',
+  'jrhee17',
+  'minwoox',
+  'trustin'
+]} />