fix: use compact JSON encoding for compressed GST return log-files

[shubhdoshi21]

Problem

get_compressed_data was calling frappe.as_json which passes indent=1 and sort_keys=True to json.dumps. This produces pretty-printed output with \n, \t, and spaces — pure whitespace overhead in every stored file.

Changes

• Use json.dumps directly with separators=(",", ":") — eliminates all whitespace from the serialized JSON

[codacy-production]

Up to standards ✅

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