Fix lint harder

Author: pquentin

elastic_transport/_node/_http_aiohttp.py

@@ -170,9 +170,9 @@ async def perform_request(  # type: ignore[override]
         else:
             body_to_send = None
 
-        fingerprint = None
+        aiohttp_ssl: Union["aiohttp.Fingerprint", bool] = True
         if self._ssl_assert_fingerprint:
-            fingerprint = aiohttp_fingerprint(self._ssl_assert_fingerprint)
+            aiohttp_ssl = aiohttp_fingerprint(self._ssl_assert_fingerprint)
 
         try:
             start = self._loop.time()
@@ -182,7 +182,7 @@ async def perform_request(  # type: ignore[override]
                 data=body_to_send,
                 headers=request_headers,
                 timeout=aiohttp_timeout,
-                ssl=fingerprint,
+                ssl=aiohttp_ssl,
             ) as response:
                 if is_head:  # We actually called 'GET' so throw away the data.
                     await response.release()