Update setup_install.yml

roles/matrix-synapse/tasks/synapse/setup_install.yml

@@ -38,7 +38,7 @@
     - name: Adding the S3 Install Command
       lineinfile:
         path: "{{ matrix_synapse_docker_src_files_path }}/docker/Dockerfile"
-        line: RUN pip install --no-deps --no-warn-script-location synapse-s3-storage-provider boto3
+        line: RUN pip install --no-deps --no-warn-script-location synapse-s3-storage-provider boto3 botocore
         insertafter: /synapse.*
       when: "matrix_synapse_s3_media_store_enabled|bool"