Update deploy.yml

Author: hshah-mitre

.github/workflows/deploy.yml

@@ -26,7 +26,7 @@ jobs:
         with:
           role-to-assume: arn:aws:iam::677043464939:role/GitHubAction-AssumeRoleWithAction
           role-session-name: GitHub_to_AWS_via_FederatedOIDC
-          aws-region: us-east-1
+          aws-region: ${{ secrets.AWS_REGION }}
       # Hello from AWS: WhoAmI
       - name: Sts GetCallerIdentity
         run: |
@@ -147,7 +147,7 @@ jobs:
         with:
           role-to-assume: arn:aws:iam::677043464939:role/GitHubAction-AssumeRoleWithAction
           role-session-name: GitHub_to_AWS_via_FederatedOIDC
-          aws-region: us-east-1
+          aws-region: ${{ secrets.AWS_REGION }}
       - name: Deploy to Test Environment
         env:
           S3_BUCKET_NAME: ${{ secrets.S3_BUCKET_NAME }}
@@ -173,7 +173,7 @@ jobs:
         with:
           role-to-assume: arn:aws:iam::677043464939:role/GitHubAction-AssumeRoleWithAction
           role-session-name: GitHub_to_AWS_via_FederatedOIDC
-          aws-region: us-east-1          
+          aws-region: ${{ secrets.AWS_REGION }}          
       - name: Get PR number from GitHub API
         id: pr
         run: |