docs: update version number and changelog for v2.3.2 (#730)

Author: alex-chew

CHANGELOG.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## 2.3.2 -- 2021-10-18
+
+### Maintenance
+
+* Mark high-memory proofs expensive ([#710](https://github.com/aws/aws-encryption-sdk-c/pull/710)) 
+* Simplify / update build instructions ([#713](https://github.com/aws/aws-encryption-sdk-c/pull/713))
+* Update submodules ([#726](https://github.com/aws/aws-encryption-sdk-c/pull/726)) 
+* Remove OOM test, as OOM is no longer possible from aws allocators ([#728](https://github.com/aws/aws-encryption-sdk-c/pull/728)) 
+
 ## 2.3.1 -- 2021-07-13
 
 * Add [support policy](SUPPORT_POLICY.rst).

CMakeLists.txt

@@ -51,7 +51,7 @@ set(PROJECT_NAME aws-encryption-sdk)
 # Version number of the SDK to be consumed by C code and Doxygen
 set(MAJOR 2)
 set(MINOR 3)
-set(PATCH 1)
+set(PATCH 2)
 
 # Compiler feature tests and feature flags
 set(USE_ASM TRUE