fix: Update AWS credentials configuration to use a credentials file for improved security

Author: 02loveslollipop

.github/workflows/deploy.yaml

@@ -33,13 +33,18 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Create AWS credentials file
+        shell: bash
+        run: |
+          mkdir -p ~/.aws
+          echo ${{ secrets.AWS_CREDENTIALS_B64 }} | base64 -d > ~/.aws/credentials
+
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v4
         with:
-          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
-          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-          aws-session-token: ${{ secrets.AWS_SESSION_TOKEN }}
           aws-region: ${{ env.AWS_REGION }}
+        env:
+          AWS_SHARED_CREDENTIALS_FILE: ~/.aws/credentials
 
       - name: Build visual controller frontend
         if: ${{ matrix.service == 'visual-controller' }}