fixup! Eliminate uses of requests library in service/test_app_logging.py (#7633)

Author: achave11-ucsc

test/service/test_app_logging.py

@@ -83,9 +83,10 @@ def filter_body(organ: str) -> JSON:
                                 'content-type': 'application/json',
                                 **request_headers
                             }
-                        response = self.http().request('GET', str(url),
-                                                       json=body_json,
-                                                       headers=request_headers)
+                        http = self.http_client()
+                        response = http.request('GET', str(url),
+                                                json=body_json,
+                                                headers=request_headers)
                 logs = [(r.levelno, r.getMessage()) for r in logs.records]
                 body_log_level, body_log_message = logs.pop()  # asserted separately
                 request_headers = {