[internal] Update GitHub Actions workflow files (#267)

Author: pulumi-bot

.github/workflows/main-post-build.yml

@@ -45,7 +45,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Configure AWS Credentials
-        uses: aws-actions/configure-aws-credentials@ececac1a45f3b08a01d2dd070d28d111c5fe6722 # v4.1.0
+        uses: aws-actions/configure-aws-credentials@f24d7193d98baebaeacc7e2227925dd47cc267f5 # v4.2.0
         with:
           aws-access-key-id: ${{ secrets.AWS_CORP_S3_UPLOAD_ACCESS_KEY_ID }}
           aws-region: us-west-2

.github/workflows/publish.yml

@@ -59,7 +59,7 @@ jobs:
         tools: pulumictl, pulumicli, go, schema-tools
         cache-go: false
     - name: Configure AWS Credentials
-      uses: aws-actions/configure-aws-credentials@ececac1a45f3b08a01d2dd070d28d111c5fe6722 # v4.1.0
+      uses: aws-actions/configure-aws-credentials@f24d7193d98baebaeacc7e2227925dd47cc267f5 # v4.2.0
       with:
         aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
         aws-region: us-east-2