Update changelogs for v1.22.1 release (#1784)

Update changelogs for v1.22.1 release.

### Does this change impact existing behavior?

No.

### Does this change need a changelog entry? Does it require a version
change?

Yes.

---

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license and I agree to the terms of
the [Developer Certificate of Origin
(DCO)](https://developercertificate.org/).

Signed-off-by: Alessandro Passaro <alexpax@amazon.co.uk>

Author: passaro

mountpoint-s3-client/CHANGELOG.md

@@ -1,5 +1,8 @@
-## Unreleased (v0.19.7)
+## Unreleased
 
+## v0.19.7 (March 9, 2026)
+
+* Add `'static + Send` bounds to `MemoryPool` trait, and add `get_buffer_async` method to `MemoryPool`. ([#1768](https://github.com/awslabs/mountpoint-s3/pull/1768))
 * Upgrade cargo dependencies.
 
 ## v0.19.6 (January 22, 2026)

mountpoint-s3-crt-sys/CHANGELOG.md

@@ -1,4 +1,6 @@
-## Unreleased (v0.16.1)
+## Unreleased
+
+## v0.16.1 (March 9, 2026)
 
 * Upgrade cargo dependencies.
 

mountpoint-s3-crt/CHANGELOG.md

@@ -1,4 +1,6 @@
-## Unreleased (v0.13.7)
+## Unreleased
+
+## v0.13.7 (March 9, 2026)
 
 * Add `'static + Send` bounds to `MemoryPool` trait, and add `get_buffer_async` method to `MemoryPool`. ([#1768](https://github.com/awslabs/mountpoint-s3/pull/1768))
 * Upgrade cargo dependencies.

mountpoint-s3-fs/CHANGELOG.md

@@ -1,9 +1,10 @@
-## Unreleased (v0.9.1)
+## Unreleased
 
-* Fix a race condition where concurrent operations after closing a truncated file could result in I/O errors on subsequent reads. The issue was introduced in `mountpoint-s3-fs` v0.9.0.
-  ([#1781](https://github.com/awslabs/mountpoint-s3/pull/1781))
-* Upgrade cargo dependencies.
+## v0.9.1 (March 9, 2026)
+
+* Fix a race condition where concurrent operations after closing a truncated file could result in I/O errors on subsequent reads. The issue was introduced in `mountpoint-s3-fs` v0.9.0. ([#1781](https://github.com/awslabs/mountpoint-s3/pull/1781))
 * Fix incorrect validation of default data cache limit which would cause Mountpoint to preserve less than 5% of available space ([#1779](https://github.com/awslabs/mountpoint-s3/pull/1779))
+* Upgrade cargo dependencies.
 
 ## v0.9.0 (January 22, 2026)
 

mountpoint-s3/CHANGELOG.md

@@ -1,8 +1,8 @@
-## Unreleased (v1.22.1)
+## Unreleased
 
-* Fix a race condition where concurrent operations after closing a truncated file could result in I/O errors on subsequent reads. The issue was introduced in v1.22.0.
-  ([#1781](https://github.com/awslabs/mountpoint-s3/pull/1781))
-* Upgrade cargo dependencies.
+## v1.22.1 (March 9, 2026)
+
+* Fix a race condition where concurrent operations after closing a truncated file could result in I/O errors on subsequent reads. The issue was introduced in v1.22.0. ([#1781](https://github.com/awslabs/mountpoint-s3/pull/1781))
 * Fix incorrect validation of default data cache limit which would cause Mountpoint to preserve less than 5% of available space ([#1779](https://github.com/awslabs/mountpoint-s3/pull/1779))
 
 ## v1.22.0 (January 22, 2026)