chore: pin newer aws-sdk-cpp in macOS CI builds (#729)

Author: alex-chew

.github/workflows/osx.yml

@@ -34,8 +34,9 @@ jobs:
         uses: actions/checkout@v2
         with:
           repository: "aws/aws-sdk-cpp"
-          ref: "1.8.32"
+          ref: "1.9.124"
           path: "aws-sdk-cpp"
+          submodules: recursive
 
       - name: Install dependencies
         run:

CHANGELOG.md

@@ -8,6 +8,7 @@
 * 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)) 
+* Pin newer aws-sdk-cpp in macOS CI builds ([#729](https://github.com/aws/aws-encryption-sdk-c/pull/729))
 
 ## 2.3.1 -- 2021-07-13